27191875056 has 40 divisors (see below), whose sum is σ = 72667945680. Its totient is φ = 8751407616.

The previous prime is 27191875049. The next prime is 27191875063. The reversal of 27191875056 is 65057819172.

It is an interprime number because it is at equal distance from previous prime (27191875049) and next prime (27191875063).

It is a super-2 number, since 2×27191875056² (a number of 22 digits) contains 22 as substring.

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, 9765805 + ... + 9768588.

It is an arithmetic number, because the mean of its divisors is an integer number (1816698642).

Almost surely, 2^27191875056 is an apocalyptic number.

It is an amenable number.

27191875056 is an abundant number, since it is smaller than the sum of its proper divisors (45476070624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27191875056 is a wasteful number, since it uses less digits than its factorization.

27191875056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19534433 (or 19534427 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 27191875056 in words is "twenty-seven billion, one hundred ninety-one million, eight hundred seventy-five thousand, fifty-six".