23474624640 has 128 divisors (see below), whose sum is σ = 78763665600. Its totient is φ = 5930422272.

The previous prime is 23474624627. The next prime is 23474624647. The reversal of 23474624640 is 4642647432.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 23474624592 and 23474624601.

It is not an unprimeable number, because it can be changed into a prime (23474624647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285267 + ... + 358226.

Almost surely, 2^23474624640 is an apocalyptic number.

23474624640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23474624640 is an abundant number, since it is smaller than the sum of its proper divisors (55289040960).

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

23474624640 is a wasteful number, since it uses less digits than its factorization.

23474624640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643534 (or 643522 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 42.

The spelling of 23474624640 in words is "twenty-three billion, four hundred seventy-four million, six hundred twenty-four thousand, six hundred forty".