23502220540 has 12 divisors (see below), whose sum is σ = 49354663176. Its totient is φ = 9400888208.

The previous prime is 23502220523. The next prime is 23502220543. The reversal of 23502220540 is 4502220532.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23502220543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587555494 + ... + 587555533.

It is an arithmetic number, because the mean of its divisors is an integer number (4112888598).

Almost surely, 2^23502220540 is an apocalyptic number.

23502220540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23502220540 is an abundant number, since it is smaller than the sum of its proper divisors (25852442636).

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

23502220540 is a wasteful number, since it uses less digits than its factorization.

23502220540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175111036 (or 1175111034 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 23502220540 in words is "twenty-three billion, five hundred two million, two hundred twenty thousand, five hundred forty".