166620814626 has 64 divisors (see below), whose sum is σ = 384335953920. Its totient is φ = 47171850240.

The previous prime is 166620814559. The next prime is 166620814637. The reversal of 166620814626 is 626418026661.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2021245 + ... + 2102063.

It is an arithmetic number, because the mean of its divisors is an integer number (6005249280).

Almost surely, 2^166620814626 is an apocalyptic number.

166620814626 is an abundant number, since it is smaller than the sum of its proper divisors (217715139294).

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

166620814626 is a wasteful number, since it uses less digits than its factorization.

166620814626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81279.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 166620814626 in words is "one hundred sixty-six billion, six hundred twenty million, eight hundred fourteen thousand, six hundred twenty-six".