166565032260 has 96 divisors (see below), whose sum is σ = 517403980800. Its totient is φ = 39694995840.

The previous prime is 166565032259. The next prime is 166565032261. The reversal of 166565032260 is 62230565661.

It is an interprime number because it is at equal distance from previous prime (166565032259) and next prime (166565032261).

It is not an unprimeable number, because it can be changed into a prime (166565032261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2099800 + ... + 2177679.

It is an arithmetic number, because the mean of its divisors is an integer number (5389624800).

Almost surely, 2^166565032260 is an apocalyptic number.

166565032260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166565032260 is an abundant number, since it is smaller than the sum of its proper divisors (350838948540).

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

166565032260 is a wasteful number, since it uses less digits than its factorization.

166565032260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277561 (or 4277559 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 166565032260 in words is "one hundred sixty-six billion, five hundred sixty-five million, thirty-two thousand, two hundred sixty".