27139178136 has 64 divisors (see below), whose sum is σ = 77764135680. Its totient is φ = 7731688320.

The previous prime is 27139178123. The next prime is 27139178147. The reversal of 27139178136 is 63187193172.

It is a congruent number.

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, 174475 + ... + 291066.

It is an arithmetic number, because the mean of its divisors is an integer number (1215064620).

Almost surely, 2^27139178136 is an apocalyptic number.

It is an amenable number.

27139178136 is an abundant number, since it is smaller than the sum of its proper divisors (50624957544).

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

27139178136 is a wasteful number, since it uses less digits than its factorization.

27139178136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465904 (or 465900 counting only the distinct ones).

The product of its digits is 381024, while the sum is 48.

The spelling of 27139178136 in words is "twenty-seven billion, one hundred thirty-nine million, one hundred seventy-eight thousand, one hundred thirty-six".