27771623112 has 64 divisors (see below), whose sum is σ = 69791065920. Its totient is φ = 9209069568.

The previous prime is 27771623093. The next prime is 27771623149. The reversal of 27771623112 is 21132617772.

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, 3802248 + ... + 3809544.

It is an arithmetic number, because the mean of its divisors is an integer number (1090485405).

Almost surely, 2^27771623112 is an apocalyptic number.

It is an amenable number.

27771623112 is an abundant number, since it is smaller than the sum of its proper divisors (42019442808).

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

27771623112 is a wasteful number, since it uses less digits than its factorization.

27771623112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110 (or 8106 counting only the distinct ones).

The product of its digits is 49392, while the sum is 39.

The spelling of 27771623112 in words is "twenty-seven billion, seven hundred seventy-one million, six hundred twenty-three thousand, one hundred twelve".