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12881946914 = 2192992912583
BaseRepresentation
bin10111111111101001…
…01110100100100010
31020020202122201001222
423333310232210202
5202340234300124
65530132455042
7634140512354
oct137764564442
936222581058
1012881946914
115510583421
1225b617a482
1312a3aa9cc5
148a2bd90d4
15505dd325e
hex2ffd2e922

12881946914 has 32 divisors (see below), whose sum is σ = 21065616000. Its totient is φ = 5884752384.

The previous prime is 12881946893. The next prime is 12881946947. The reversal of 12881946914 is 41964918821.

It is a happy number.

It is a super-2 number, since 2×128819469142 (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017467 + ... + 1030049.

It is an arithmetic number, because the mean of its divisors is an integer number (658300500).

Almost surely, 212881946914 is an apocalyptic number.

12881946914 is a deficient number, since it is larger than the sum of its proper divisors (8183669086).

12881946914 is a wasteful number, since it uses less digits than its factorization.

12881946914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13562.

The product of its digits is 995328, while the sum is 53.

The spelling of 12881946914 in words is "twelve billion, eight hundred eighty-one million, nine hundred forty-six thousand, nine hundred fourteen".

Divisors: 1 2 19 29 38 58 551 929 1102 1858 12583 17651 25166 26941 35302 53882 239077 364907 478154 511879 729814 1023758 6933233 11689607 13866466 23379214 222102533 338998603 444205066 677997206 6440973457 12881946914