27876138956 has 24 divisors (see below), whose sum is σ = 48952118880. Its totient is φ = 13889888000.

The previous prime is 27876138947. The next prime is 27876138973. The reversal of 27876138956 is 65983167872.

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, 1771001 + ... + 1786671.

It is an arithmetic number, because the mean of its divisors is an integer number (2039671620).

Almost surely, 2^27876138956 is an apocalyptic number.

It is an amenable number.

27876138956 is a deficient number, since it is larger than the sum of its proper divisors (21075979924).

27876138956 is a wasteful number, since it uses less digits than its factorization.

27876138956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17185 (or 17183 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 62.

The spelling of 27876138956 in words is "twenty-seven billion, eight hundred seventy-six million, one hundred thirty-eight thousand, nine hundred fifty-six".