12697688992 has 12 divisors (see below), whose sum is σ = 24998575266. Its totient is φ = 6348844480.

The previous prime is 12697688989. The next prime is 12697689023. The reversal of 12697688992 is 29988679621.

It can be written as a sum of positive squares in only one way, i.e., 12587942416 + 109746576 = 112196^2 + 10476^2 .

It is a super-2 number, since 2×12697688992² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198401359 + ... + 198401422.

Almost surely, 2^12697688992 is an apocalyptic number.

It is an amenable number.

12697688992 is a deficient number, since it is larger than the sum of its proper divisors (12300886274).

12697688992 is an equidigital number, since it uses as much as digits as its factorization.

12697688992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396802791 (or 396802783 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 67.

The spelling of 12697688992 in words is "twelve billion, six hundred ninety-seven million, six hundred eighty-eight thousand, nine hundred ninety-two".