23564406660 has 48 divisors (see below), whose sum is σ = 68849053056. Its totient is φ = 6010630912.

The previous prime is 23564406659. The next prime is 23564406703. The reversal of 23564406660 is 6660446532.

It is a super-2 number, since 2×23564406660² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8536449 + ... + 8539208.

It is an arithmetic number, because the mean of its divisors is an integer number (1434355272).

Almost surely, 2^23564406660 is an apocalyptic number.

23564406660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23564406660 is an abundant number, since it is smaller than the sum of its proper divisors (45284646396).

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

23564406660 is a wasteful number, since it uses less digits than its factorization.

23564406660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17075692 (or 17075690 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 23564406660 in words is "twenty-three billion, five hundred sixty-four million, four hundred six thousand, six hundred sixty".