22198087808 has 72 divisors (see below), whose sum is σ = 47933494695. Its totient is φ = 10235157504.

The previous prime is 22198087799. The next prime is 22198087823. The reversal of 22198087808 is 80878089122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 2555504704 + 19642583104 = 50552^2 + 140152^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105352.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22198087808.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21912710 + ... + 21913722.

Almost surely, 2^22198087808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22198087808

22198087808 is an abundant number, since it is smaller than the sum of its proper divisors (25735406887).

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

22198087808 is an frugal number, since it uses more digits than its factorization.

22198087808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 53.

The spelling of 22198087808 in words is "twenty-two billion, one hundred ninety-eight million, eighty-seven thousand, eight hundred eight".