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12759219990 = 23251116377873
BaseRepresentation
bin10111110001000001…
…00011111100010110
31012221012201112101100
423320200203330112
5202112330014430
65510030210530
7631120403046
oct137040437426
935835645340
1012759219990
115458279910
122581053a46
131284539b1a
148907ad726
154ea23e960
hex2f8823f16

12759219990 has 96 divisors (see below), whose sum is σ = 36216494496. Its totient is φ = 3090862080.

The previous prime is 12759219983. The next prime is 12759220013. The reversal of 12759219990 is 9991295721.

12759219990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1616694 + ... + 1624566.

It is an arithmetic number, because the mean of its divisors is an integer number (377255151).

Almost surely, 212759219990 is an apocalyptic number.

12759219990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12759219990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18108247248).

12759219990 is an abundant number, since it is smaller than the sum of its proper divisors (23457274506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12759219990 is a wasteful number, since it uses less digits than its factorization.

12759219990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9534 (or 9531 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 54.

The spelling of 12759219990 in words is "twelve billion, seven hundred fifty-nine million, two hundred nineteen thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 30 33 45 55 66 90 99 110 165 198 330 495 990 1637 3274 4911 7873 8185 9822 14733 15746 16370 18007 23619 24555 29466 36014 39365 47238 49110 54021 70857 73665 78730 86603 90035 108042 118095 141714 147330 162063 173206 180070 236190 259809 270105 324126 354285 433015 519618 540210 708570 779427 810315 866030 1299045 1558854 1620630 2598090 3897135 7794270 12888101 25776202 38664303 64440505 77328606 115992909 128881010 141769111 193321515 231985818 283538222 386643030 425307333 579964545 708845555 850614666 1159929090 1275921999 1417691110 2126536665 2551843998 4253073330 6379609995 12759219990