166420524502506 has 16 divisors (see below), whose sum is σ = 332910203654304. Its totient is φ = 55461982392624.

The previous prime is 166420524502489. The next prime is 166420524502513. The reversal of 166420524502506 is 605205425024661.

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, 2881412436 + ... + 2881470191.

It is an arithmetic number, because the mean of its divisors is an integer number (20806887728394).

Almost surely, 2^{166420524502506} is an apocalyptic number.

166420524502506 is an abundant number, since it is smaller than the sum of its proper divisors (166489679151798).

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

166420524502506 is a wasteful number, since it uses less digits than its factorization.

166420524502506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5762887445.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 166420524502506 in words is "one hundred sixty-six trillion, four hundred twenty billion, five hundred twenty-four million, five hundred two thousand, five hundred six".