22664436520 has 64 divisors (see below), whose sum is σ = 58558852800. Its totient is φ = 7807841280.

The previous prime is 22664436503. The next prime is 22664436523. The reversal of 22664436520 is 2563446622.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (22664436523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1347169 + ... + 1363888.

It is an arithmetic number, because the mean of its divisors is an integer number (914982075).

Almost surely, 2^22664436520 is an apocalyptic number.

22664436520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22664436520 is an abundant number, since it is smaller than the sum of its proper divisors (35894416280).

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

22664436520 is a wasteful number, since it uses less digits than its factorization.

22664436520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711098 (or 2711094 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 22664436520 in words is "twenty-two billion, six hundred sixty-four million, four hundred thirty-six thousand, five hundred twenty".