22109310864 has 45 divisors (see below), whose sum is σ = 61880357019. Its totient is φ = 7369175520.

The previous prime is 22109310857. The next prime is 22109310869. The reversal of 22109310864 is 46801390122.

The square root of 22109310864 is 148692.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22109310869) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1778109 + ... + 1790499.

Almost surely, 2^22109310864 is an apocalyptic number.

22109310864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

22109310864 is the 148692-nd square number.

It is an amenable number.

22109310864 is an abundant number, since it is smaller than the sum of its proper divisors (39771046155).

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

22109310864 is an frugal number, since it uses more digits than its factorization.

22109310864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24796 (or 12396 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

Multiplying 22109310864 by its sum of digits (36), we get a square (795935191104 = 892152²).

22109310864 divided by its sum of digits (36) gives a square (614147524 = 24782²).

Multiplying 22109310864 by its product of nonzero digits (20736), we get a square (458458670075904 = 21411648²).

The spelling of 22109310864 in words is "twenty-two billion, one hundred nine million, three hundred ten thousand, eight hundred sixty-four".