163540031565144 has 128 divisors (see below), whose sum is σ = 476000092512000. Its totient is φ = 46383166785024.

The previous prime is 163540031565133. The next prime is 163540031565179. The reversal of 163540031565144 is 441565130045361.

It is a junction number, because it is equal to n+sod(n) for n = 163540031565093 and 163540031565102.

It is a congruent number.

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, 372587754 + ... + 373026425.

It is an arithmetic number, because the mean of its divisors is an integer number (3718750722750).

Almost surely, 2^{163540031565144} is an apocalyptic number.

It is an amenable number.

163540031565144 is an abundant number, since it is smaller than the sum of its proper divisors (312460060946856).

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

163540031565144 is a wasteful number, since it uses less digits than its factorization.

163540031565144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745614257 (or 745614253 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 163540031565144 in words is "one hundred sixty-three trillion, five hundred forty billion, thirty-one million, five hundred sixty-five thousand, one hundred forty-four".