23990539564 has 24 divisors (see below), whose sum is σ = 43419479040. Its totient is φ = 11591435856.

The previous prime is 23990539561. The next prime is 23990539567. The reversal of 23990539564 is 46593509932.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23990539561) and next prime (23990539567).

It is not an unprimeable number, because it can be changed into a prime (23990539561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792802 + ... + 822505.

It is an arithmetic number, because the mean of its divisors is an integer number (1809144960).

Almost surely, 2^23990539564 is an apocalyptic number.

It is an amenable number.

23990539564 is a deficient number, since it is larger than the sum of its proper divisors (19428939476).

23990539564 is a wasteful number, since it uses less digits than its factorization.

23990539564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615437 (or 1615435 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 55.

The spelling of 23990539564 in words is "twenty-three billion, nine hundred ninety million, five hundred thirty-nine thousand, five hundred sixty-four".