12697432055 has 24 divisors (see below), whose sum is σ = 19140598176. Its totient is φ = 7915279680.

The previous prime is 12697432021. The next prime is 12697432061. The reversal of 12697432055 is 55023479621.

It is not a de Polignac number, because 12697432055 - 2¹⁰ = 12697431031 is a prime.

It is a super-2 number, since 2×12697432055² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12697431997 and 12697432015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1494872 + ... + 1503341.

It is an arithmetic number, because the mean of its divisors is an integer number (797524924).

Almost surely, 2^12697432055 is an apocalyptic number.

12697432055 is a deficient number, since it is larger than the sum of its proper divisors (6443166121).

12697432055 is a wasteful number, since it uses less digits than its factorization.

12697432055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998247 (or 2998236 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 12697432055 in words is "twelve billion, six hundred ninety-seven million, four hundred thirty-two thousand, fifty-five".