27013881816 has 48 divisors (see below), whose sum is σ = 73383696360. Its totient is φ = 8977415040.

The previous prime is 27013881767. The next prime is 27013881863. The reversal of 27013881816 is 61818831072.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 542925 + ... + 590588.

Almost surely, 2^27013881816 is an apocalyptic number.

It is an amenable number.

27013881816 is an abundant number, since it is smaller than the sum of its proper divisors (46369814544).

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

27013881816 is a wasteful number, since it uses less digits than its factorization.

27013881816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133856 (or 1133849 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 27013881816 in words is "twenty-seven billion, thirteen million, eight hundred eighty-one thousand, eight hundred sixteen".