27877811772 has 48 divisors (see below), whose sum is σ = 66808748160. Its totient is φ = 9042710208.

The previous prime is 27877811659. The next prime is 27877811803. The reversal of 27877811772 is 27711877872.

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 15 ways as a sum of consecutive naturals, for example, 38383 + ... + 239225.

It is an arithmetic number, because the mean of its divisors is an integer number (1391848920).

Almost surely, 2^27877811772 is an apocalyptic number.

It is an amenable number.

27877811772 is an abundant number, since it is smaller than the sum of its proper divisors (38930936388).

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

27877811772 is a wasteful number, since it uses less digits than its factorization.

27877811772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201162 (or 201160 counting only the distinct ones).

The product of its digits is 4302592, while the sum is 57.

The spelling of 27877811772 in words is "twenty-seven billion, eight hundred seventy-seven million, eight hundred eleven thousand, seven hundred seventy-two".