23773720520 has 32 divisors (see below), whose sum is σ = 58353678720. Its totient is φ = 8644989120.

The previous prime is 23773720513. The next prime is 23773720549. The reversal of 23773720520 is 2502737732.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 27015152 + ... + 27016031.

It is an arithmetic number, because the mean of its divisors is an integer number (1823552460).

Almost surely, 2^23773720520 is an apocalyptic number.

23773720520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23773720520 is an abundant number, since it is smaller than the sum of its proper divisors (34579958200).

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

23773720520 is a wasteful number, since it uses less digits than its factorization.

23773720520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54031205 (or 54031201 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 38.

The spelling of 23773720520 in words is "twenty-three billion, seven hundred seventy-three million, seven hundred twenty thousand, five hundred twenty".