22642664856 has 32 divisors (see below), whose sum is σ = 64693328640. Its totient is φ = 6469332768.

The previous prime is 22642664839. The next prime is 22642664861. The reversal of 22642664856 is 65846624622.

It is a super-2 number, since 2×22642664856² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22642664799 and 22642664808.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 67388716 + ... + 67389051.

It is an arithmetic number, because the mean of its divisors is an integer number (2021666520).

Almost surely, 2^22642664856 is an apocalyptic number.

It is an amenable number.

22642664856 is an abundant number, since it is smaller than the sum of its proper divisors (42050663784).

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

22642664856 is a wasteful number, since it uses less digits than its factorization.

22642664856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134777783 (or 134777779 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 51.

The spelling of 22642664856 in words is "twenty-two billion, six hundred forty-two million, six hundred sixty-four thousand, eight hundred fifty-six".