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12660971192 = 2312291287731
BaseRepresentation
bin10111100101010011…
…10001011010111000
31012200100211222100222
423302221301122320
5201412202034232
65452200315212
7625515323312
oct136251613270
935610758328
1012660971192
115407874061
122554172b08
13126a08a43c
148817167b2
154e17d3d12
hex2f2a716b8

12660971192 has 16 divisors (see below), whose sum is σ = 23758655400. Its totient is φ = 6325329760.

The previous prime is 12660971171. The next prime is 12660971201. The reversal of 12660971192 is 29117906621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634034 + ... + 653697.

Almost surely, 212660971192 is an apocalyptic number.

It is an amenable number.

12660971192 is a deficient number, since it is larger than the sum of its proper divisors (11097684208).

12660971192 is a wasteful number, since it uses less digits than its factorization.

12660971192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288966 (or 1288962 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 12660971192 in words is "twelve billion, six hundred sixty million, nine hundred seventy-one thousand, one hundred ninety-two".

Divisors: 1 2 4 8 1229 2458 4916 9832 1287731 2575462 5150924 10301848 1582621399 3165242798 6330485596 12660971192