18927777139904 has 14 divisors (see below), whose sum is σ = 37559807762124. Its totient is φ = 9463888569920.

The previous prime is 18927777139883. The next prime is 18927777139919. The reversal of 18927777139904 is 40993177772981.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 147873258842 + ... + 147873258969.

Almost surely, 2^{18927777139904} is an apocalyptic number.

It is an amenable number.

18927777139904 is a deficient number, since it is larger than the sum of its proper divisors (18632030622220).

18927777139904 is an equidigital number, since it uses as much as digits as its factorization.

18927777139904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295746517823 (or 295746517813 counting only the distinct ones).

The product of its (nonzero) digits is 336063168, while the sum is 74.

The spelling of 18927777139904 in words is "eighteen trillion, nine hundred twenty-seven billion, seven hundred seventy-seven million, one hundred thirty-nine thousand, nine hundred four".