166502905163 has 16 divisors (see below), whose sum is σ = 201499752384. Its totient is φ = 134310174720.

The previous prime is 166502905139. The next prime is 166502905171. The reversal of 166502905163 is 361509205661.

It is a cyclic number.

It is not a de Polignac number, because 166502905163 - 2⁶ = 166502905099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166502905183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1508081 + ... + 1614717.

It is an arithmetic number, because the mean of its divisors is an integer number (12593734524).

Almost surely, 2^166502905163 is an apocalyptic number.

166502905163 is a deficient number, since it is larger than the sum of its proper divisors (34996847221).

166502905163 is a wasteful number, since it uses less digits than its factorization.

166502905163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119782.

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 166502905163 in words is "one hundred sixty-six billion, five hundred two million, nine hundred five thousand, one hundred sixty-three".