Search a number
-
+
12685759488 = 210331923141
BaseRepresentation
bin10111101000010000…
…10101010000000000
31012202002111100112000
423310020111100000
5201440023300423
65454443504000
7626236114353
oct136410252000
935662440460
1012685759488
11541a864956
122560528000
13127225917c
14884b2a29a
154e3a7d843
hex2f4215400

12685759488 has 528 divisors, whose sum is σ = 41927800320. Its totient is φ = 3782246400.

The previous prime is 12685759483. The next prime is 12685759547. The reversal of 12685759488 is 88495758621.

12685759488 is a `hidden beast` number, since 1 + 2 + 6 + 85 + 75 + 9 + 488 = 666.

Its product of digits (38707200) is a multiple of the sum of its prime divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12685759483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 309408748 + ... + 309408788.

Almost surely, 212685759488 is an apocalyptic number.

12685759488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12685759488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20963900160).

12685759488 is an abundant number, since it is smaller than the sum of its proper divisors (29242040832).

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

12685759488 is a wasteful number, since it uses less digits than its factorization.

12685759488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 96 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 63.

The spelling of 12685759488 in words is "twelve billion, six hundred eighty-five million, seven hundred fifty-nine thousand, four hundred eighty-eight".