18616864336 has 40 divisors (see below), whose sum is σ = 41257678784. Its totient is φ = 7971955200.

The previous prime is 18616864313. The next prime is 18616864337. The reversal of 18616864336 is 63346861681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18616864337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65311 + ... + 203713.

Almost surely, 2^18616864336 is an apocalyptic number.

18616864336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18616864336 is an abundant number, since it is smaller than the sum of its proper divisors (22640814448).

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

18616864336 is a wasteful number, since it uses less digits than its factorization.

18616864336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139619 (or 139613 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The spelling of 18616864336 in words is "eighteen billion, six hundred sixteen million, eight hundred sixty-four thousand, three hundred thirty-six".