18620624138672 has 20 divisors (see below), whose sum is σ = 37052525736576. Its totient is φ = 9058682013120.

The previous prime is 18620624138651. The next prime is 18620624138807. The reversal of 18620624138672 is 27683142602681.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15726877904 + ... + 15726879087.

Almost surely, 2^{18620624138672} is an apocalyptic number.

It is an amenable number.

18620624138672 is a deficient number, since it is larger than the sum of its proper divisors (18431901597904).

18620624138672 is a wasteful number, since it uses less digits than its factorization.

18620624138672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31453757036 (or 31453757030 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 18620624138672 in words is "eighteen trillion, six hundred twenty billion, six hundred twenty-four million, one hundred thirty-eight thousand, six hundred seventy-two".