23515125534 has 48 divisors (see below), whose sum is σ = 53692825680. Its totient is φ = 7417267200.

The previous prime is 23515125497. The next prime is 23515125539. The reversal of 23515125534 is 43552151532.

23515125534 is a `hidden beast` number, since 2 + 3 + 51 + 51 + 2 + 553 + 4 = 666.

It is a super-2 number, since 2×23515125534² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23515125539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260734 + ... + 339134.

It is an arithmetic number, because the mean of its divisors is an integer number (1118600535).

Almost surely, 2^23515125534 is an apocalyptic number.

23515125534 is an abundant number, since it is smaller than the sum of its proper divisors (30177700146).

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

23515125534 is a wasteful number, since it uses less digits than its factorization.

23515125534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79305 (or 79302 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 23515125534 in words is "twenty-three billion, five hundred fifteen million, one hundred twenty-five thousand, five hundred thirty-four".