20627179538 has 32 divisors (see below), whose sum is σ = 35624398080. Its totient is φ = 8774438400.

The previous prime is 20627179471. The next prime is 20627179577. The reversal of 20627179538 is 83597172602.

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, 3144470 + ... + 3151022.

It is an arithmetic number, because the mean of its divisors is an integer number (1113262440).

Almost surely, 2^20627179538 is an apocalyptic number.

20627179538 is a deficient number, since it is larger than the sum of its proper divisors (14997218542).

20627179538 is a wasteful number, since it uses less digits than its factorization.

20627179538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8202.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 20627179538 in words is "twenty billion, six hundred twenty-seven million, one hundred seventy-nine thousand, five hundred thirty-eight".