23559457920 has 64 divisors (see below), whose sum is σ = 75095778240. Its totient is φ = 6282521600.

The previous prime is 23559457919. The next prime is 23559457927. The reversal of 23559457920 is 2975495532.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (23559457927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6133356 + ... + 6137195.

It is an arithmetic number, because the mean of its divisors is an integer number (1173371535).

Almost surely, 2^23559457920 is an apocalyptic number.

23559457920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23559457920 is an abundant number, since it is smaller than the sum of its proper divisors (51536320320).

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

23559457920 is a wasteful number, since it uses less digits than its factorization.

23559457920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12270573 (or 12270561 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 51.

The spelling of 23559457920 in words is "twenty-three billion, five hundred fifty-nine million, four hundred fifty-seven thousand, nine hundred twenty".