22720957455868 has 12 divisors (see below), whose sum is σ = 45441914911792. Its totient is φ = 9737553195360.

The previous prime is 22720957455853. The next prime is 22720957455899. The reversal of 22720957455868 is 86855475902722.

It is a happy number.

22720957455868 is an admirable number.

It is a super-2 number, since 2×22720957455868² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22720957455797 and 22720957455806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405731383113 + ... + 405731383168.

Almost surely, 2^{22720957455868} is an apocalyptic number.

22720957455868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22720957455868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22720957455868 is a wasteful number, since it uses less digits than its factorization.

22720957455868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811462766292 (or 811462766290 counting only the distinct ones).

The product of its (nonzero) digits is 677376000, while the sum is 70.

The spelling of 22720957455868 in words is "twenty-two trillion, seven hundred twenty billion, nine hundred fifty-seven million, four hundred fifty-five thousand, eight hundred sixty-eight".