22156349521264 has 80 divisors (see below), whose sum is σ = 49130094361600. Its totient is φ = 9482113124352.

The previous prime is 22156349521261. The next prime is 22156349521277. The reversal of 22156349521264 is 46212594365122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22156349521261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326144869 + ... + 326212795.

It is an arithmetic number, because the mean of its divisors is an integer number (614126179520).

Almost surely, 2^{22156349521264} is an apocalyptic number.

It is an amenable number.

22156349521264 is an abundant number, since it is smaller than the sum of its proper divisors (26973744840336).

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

22156349521264 is a wasteful number, since it uses less digits than its factorization.

22156349521264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72030 (or 72024 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 52.

The spelling of 22156349521264 in words is "twenty-two trillion, one hundred fifty-six billion, three hundred forty-nine million, five hundred twenty-one thousand, two hundred sixty-four".