216664365604 has 12 divisors (see below), whose sum is σ = 391393692928. Its totient is φ = 104837596200.

The previous prime is 216664365587. The next prime is 216664365623. The reversal of 216664365604 is 406563466612.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

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, 873646512 + ... + 873646759.

Almost surely, 2^216664365604 is an apocalyptic number.

It is an amenable number.

216664365604 is a deficient number, since it is larger than the sum of its proper divisors (174729327324).

216664365604 is a wasteful number, since it uses less digits than its factorization.

216664365604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747293306 (or 1747293304 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 216664365604 in words is "two hundred sixteen billion, six hundred sixty-four million, three hundred sixty-five thousand, six hundred four".