166501655562 has 16 divisors (see below), whose sum is σ = 363276339552. Its totient is φ = 50455047120.

The previous prime is 166501655533. The next prime is 166501655587. The reversal of 166501655562 is 265556105661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261376113 + ... + 1261376244.

It is an arithmetic number, because the mean of its divisors is an integer number (22704771222).

Almost surely, 2^166501655562 is an apocalyptic number.

166501655562 is an abundant number, since it is smaller than the sum of its proper divisors (196774683990).

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

166501655562 is a wasteful number, since it uses less digits than its factorization.

166501655562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522752373.

The product of its (nonzero) digits is 1620000, while the sum is 48.

The spelling of 166501655562 in words is "one hundred sixty-six billion, five hundred one million, six hundred fifty-five thousand, five hundred sixty-two".