166653612864 has 112 divisors (see below), whose sum is σ = 496831559040. Its totient is φ = 54768752640.

The previous prime is 166653612841. The next prime is 166653612893. The reversal of 166653612864 is 468216356661.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 166653612864.

It is a congruent number.

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, 556489 + ... + 801864.

Almost surely, 2^166653612864 is an apocalyptic number.

It is an amenable number.

166653612864 is an abundant number, since it is smaller than the sum of its proper divisors (330177946176).

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

166653612864 is a wasteful number, since it uses less digits than its factorization.

166653612864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358445 (or 1358429 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 166653612864 in words is "one hundred sixty-six billion, six hundred fifty-three million, six hundred twelve thousand, eight hundred sixty-four".