18627856688 has 40 divisors (see below), whose sum is σ = 42253441440. Its totient is φ = 7788648960.

The previous prime is 18627856679. The next prime is 18627856703. The reversal of 18627856688 is 88665872681.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2023703 + ... + 2032886.

It is an arithmetic number, because the mean of its divisors is an integer number (1056336036).

Almost surely, 2^18627856688 is an apocalyptic number.

It is an amenable number.

18627856688 is an abundant number, since it is smaller than the sum of its proper divisors (23625584752).

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

18627856688 is a wasteful number, since it uses less digits than its factorization.

18627856688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056645 (or 4056639 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 65.

The spelling of 18627856688 in words is "eighteen billion, six hundred twenty-seven million, eight hundred fifty-six thousand, six hundred eighty-eight".