27992861944 has 16 divisors (see below), whose sum is σ = 52864219800. Its totient is φ = 13895736672.

The previous prime is 27992861909. The next prime is 27992861959. The reversal of 27992861944 is 44916829972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12585607 + ... + 12587830.

Almost surely, 2^27992861944 is an apocalyptic number.

It is an amenable number.

27992861944 is a deficient number, since it is larger than the sum of its proper divisors (24871357856).

27992861944 is a wasteful number, since it uses less digits than its factorization.

27992861944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25173582 (or 25173578 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 61.

The spelling of 27992861944 in words is "twenty-seven billion, nine hundred ninety-two million, eight hundred sixty-one thousand, nine hundred forty-four".