163540031565145 has 16 divisors (see below), whose sum is σ = 196566379292160. Its totient is φ = 130619903440000.

The previous prime is 163540031565133. The next prime is 163540031565179. The reversal of 163540031565145 is 541565130045361.

It is not a de Polignac number, because 163540031565145 - 2²⁷ = 163539897347417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5759736 + ... + 18980374.

It is an arithmetic number, because the mean of its divisors is an integer number (12285398705760).

Almost surely, 2^{163540031565145} is an apocalyptic number.

It is an amenable number.

163540031565145 is a deficient number, since it is larger than the sum of its proper divisors (33026347727015).

163540031565145 is a wasteful number, since it uses less digits than its factorization.

163540031565145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13224656.

The product of its (nonzero) digits is 3240000, while the sum is 49.

The spelling of 163540031565145 in words is "one hundred sixty-three trillion, five hundred forty billion, thirty-one million, five hundred sixty-five thousand, one hundred forty-five".