18214895664 has 60 divisors (see below), whose sum is σ = 58258756816. Its totient is φ = 5204255616.

The previous prime is 18214895659. The next prime is 18214895693. The reversal of 18214895664 is 46659841281.

18214895664 is a `hidden beast` number, since 18 + 21 + 48 + 9 + 566 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18214895664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9034159 + ... + 9036174.

Almost surely, 2^18214895664 is an apocalyptic number.

18214895664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18214895664 is an abundant number, since it is smaller than the sum of its proper divisors (40043861152).

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

18214895664 is a wasteful number, since it uses less digits than its factorization.

18214895664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18070354 (or 18070345 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 18214895664 in words is "eighteen billion, two hundred fourteen million, eight hundred ninety-five thousand, six hundred sixty-four".