165660105700 has 72 divisors (see below), whose sum is σ = 388727119872. Its totient is φ = 61039188480.

The previous prime is 165660105643. The next prime is 165660105733. The reversal of 165660105700 is 7501066561.

It is a self number, because there is not a number n which added to its sum of digits gives 165660105700.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 956772 + ... + 1116571.

It is an arithmetic number, because the mean of its divisors is an integer number (5398987776).

Almost surely, 2^165660105700 is an apocalyptic number.

165660105700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165660105700 is an abundant number, since it is smaller than the sum of its proper divisors (223067014172).

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

165660105700 is a wasteful number, since it uses less digits than its factorization.

165660105700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073421 (or 2073414 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 165660105700 in words is "one hundred sixty-five billion, six hundred sixty million, one hundred five thousand, seven hundred".