23509573488 has 70 divisors (see below), whose sum is σ = 68293490544. Its totient is φ = 7836520608.

The previous prime is 23509573453. The next prime is 23509573501. The reversal of 23509573488 is 88437590532.

23509573488 is a `hidden beast` number, since 2 + 3 + 5 + 0 + 95 + 73 + 488 = 666.

It is a super-2 number, since 2×23509573488² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 996120 + ... + 1019447.

Almost surely, 2^23509573488 is an apocalyptic number.

It is an amenable number.

23509573488 is an abundant number, since it is smaller than the sum of its proper divisors (44783917056).

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

23509573488 is an equidigital number, since it uses as much as digits as its factorization.

23509573488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015593 (or 2015572 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 23509573488 in words is "twenty-three billion, five hundred nine million, five hundred seventy-three thousand, four hundred eighty-eight".