27197664056 has 32 divisors (see below), whose sum is σ = 51335575200. Its totient is φ = 13508480640.

The previous prime is 27197664023. The next prime is 27197664079. The reversal of 27197664056 is 65046679172.

It is a super-2 number, since 2×27197664056² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27197663989 and 27197664007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710330 + ... + 747638.

It is an arithmetic number, because the mean of its divisors is an integer number (1604236725).

Almost surely, 2^27197664056 is an apocalyptic number.

It is an amenable number.

27197664056 is a deficient number, since it is larger than the sum of its proper divisors (24137911144).

27197664056 is a wasteful number, since it uses less digits than its factorization.

27197664056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37919 (or 37915 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 27197664056 in words is "twenty-seven billion, one hundred ninety-seven million, six hundred sixty-four thousand, fifty-six".