23508566040 has 128 divisors (see below), whose sum is σ = 73888081920. Its totient is φ = 5976115200.

The previous prime is 23508566021. The next prime is 23508566051. The reversal of 23508566040 is 4066580532.

It is a self number, because there is not a number n which added to its sum of digits gives 23508566040.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 202080 + ... + 296400.

It is an arithmetic number, because the mean of its divisors is an integer number (577250640).

Almost surely, 2^23508566040 is an apocalyptic number.

23508566040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23508566040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36944040960).

23508566040 is an abundant number, since it is smaller than the sum of its proper divisors (50379515880).

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

23508566040 is a wasteful number, since it uses less digits than its factorization.

23508566040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94433 (or 94429 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 23508566040 in words is "twenty-three billion, five hundred eight million, five hundred sixty-six thousand, forty".