23531161742055 has 80 divisors (see below), whose sum is σ = 48017211416064. Its totient is φ = 10913002499520.

The previous prime is 23531161742047. The next prime is 23531161742141. The reversal of 23531161742055 is 55024716113532.

23531161742055 is a `hidden beast` number, since 2 + 3 + 5 + 3 + 1 + 1 + 617 + 4 + 20 + 5 + 5 = 666.

It is not a de Polignac number, because 23531161742055 - 2³ = 23531161742047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 23531161742055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 114722899 + ... + 114927828.

Almost surely, 2^{23531161742055} is an apocalyptic number.

23531161742055 is an abundant number, since it is smaller than the sum of its proper divisors (24486049674009).

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

23531161742055 is a wasteful number, since it uses less digits than its factorization.

23531161742055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229650778 (or 229650769 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

Adding to 23531161742055 its reverse (55024716113532), we get a palindrome (78555877855587).

The spelling of 23531161742055 in words is "twenty-three trillion, five hundred thirty-one billion, one hundred sixty-one million, seven hundred forty-two thousand, fifty-five".