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12013254660 = 22351123791387
BaseRepresentation
bin10110011000000101…
…11011100000000100
31011000020001120022210
423030002323200010
5144100343122120
65304021423420
7603461660031
oct131402734004
934006046283
1012013254660
115105195040
1223b326ab70
131195b25914
1481d6ac388
154a49dcce0
hex2cc0bb804

12013254660 has 96 divisors (see below), whose sum is σ = 38290516992. Its totient is φ = 2785678720.

The previous prime is 12013254653. The next prime is 12013254667. The reversal of 12013254660 is 6645231021.

It is an interprime number because it is at equal distance from previous prime (12013254653) and next prime (12013254667).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (12013254667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380514 + ... + 410873.

It is an arithmetic number, because the mean of its divisors is an integer number (398859552).

Almost surely, 212013254660 is an apocalyptic number.

12013254660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013254660 is an abundant number, since it is smaller than the sum of its proper divisors (26277262332).

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

12013254660 is a wasteful number, since it uses less digits than its factorization.

12013254660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791433 (or 791431 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 12013254660 its reverse (6645231021), we get a palindrome (18658485681).

The spelling of 12013254660 in words is "twelve billion, thirteen million, two hundred fifty-four thousand, six hundred sixty".

Divisors: 1 2 3 4 5 6 10 11 12 15 20 22 23 30 33 44 46 55 60 66 69 92 110 115 132 138 165 220 230 253 276 330 345 460 506 660 690 759 1012 1265 1380 1518 2530 3036 3795 5060 7590 15180 791387 1582774 2374161 3165548 3956935 4748322 7913870 8705257 9496644 11870805 15827740 17410514 18201901 23741610 26115771 34821028 36403802 43526285 47483220 52231542 54605703 72807604 87052570 91009505 104463084 109211406 130578855 174105140 182019010 200220911 218422812 261157710 273028515 364038020 400441822 522315420 546057030 600662733 800883644 1001104555 1092114060 1201325466 2002209110 2402650932 3003313665 4004418220 6006627330 12013254660