23911864240 has 40 divisors (see below), whose sum is σ = 60649185168. Its totient is φ = 8695223040.

The previous prime is 23911864219. The next prime is 23911864261. The reversal of 23911864240 is 4246811932.

It is an interprime number because it is at equal distance from previous prime (23911864219) and next prime (23911864261).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 23911864193 and 23911864202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13585407 + ... + 13587166.

Almost surely, 2^23911864240 is an apocalyptic number.

23911864240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23911864240 is an abundant number, since it is smaller than the sum of its proper divisors (36737320928).

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

23911864240 is a wasteful number, since it uses less digits than its factorization.

23911864240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27172597 (or 27172591 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 23911864240 in words is "twenty-three billion, nine hundred eleven million, eight hundred sixty-four thousand, two hundred forty".