22235865872 has 40 divisors (see below), whose sum is σ = 48144856032. Its totient is φ = 9860691200.

The previous prime is 22235865793. The next prime is 22235865877. The reversal of 22235865872 is 27856853222.

It is a self number, because there is not a number n which added to its sum of digits gives 22235865872.

It is not an unprimeable number, because it can be changed into a prime (22235865877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533518 + ... + 1547949.

Almost surely, 2^22235865872 is an apocalyptic number.

22235865872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22235865872 is an abundant number, since it is smaller than the sum of its proper divisors (25908990160).

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

22235865872 is a wasteful number, since it uses less digits than its factorization.

22235865872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081527 (or 3081521 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 50.

The spelling of 22235865872 in words is "twenty-two billion, two hundred thirty-five million, eight hundred sixty-five thousand, eight hundred seventy-two".