27911404872 has 64 divisors (see below), whose sum is σ = 83495664000. Its totient is φ = 8588123712.

The previous prime is 27911404867. The next prime is 27911404897. The reversal of 27911404872 is 27840411972.

27911404872 is a `hidden beast` number, since 27 + 9 + 1 + 140 + 487 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4967172 + ... + 4972787.

It is an arithmetic number, because the mean of its divisors is an integer number (1304619750).

Almost surely, 2^27911404872 is an apocalyptic number.

It is an amenable number.

27911404872 is an abundant number, since it is smaller than the sum of its proper divisors (55584259128).

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

27911404872 is a wasteful number, since it uses less digits than its factorization.

27911404872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9939987 (or 9939977 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 27911404872 in words is "twenty-seven billion, nine hundred eleven million, four hundred four thousand, eight hundred seventy-two".