22451693904 has 60 divisors (see below), whose sum is σ = 62853375936. Its totient is φ = 7481537856.

The previous prime is 22451693827. The next prime is 22451693939. The reversal of 22451693904 is 40939615422.

22451693904 is a `hidden beast` number, since 2 + 245 + 16 + 9 + 390 + 4 = 666.

It is a super-2 number, since 2×22451693904² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22451693904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 467727 + ... + 513489.

Almost surely, 2^22451693904 is an apocalyptic number.

22451693904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22451693904 is an abundant number, since it is smaller than the sum of its proper divisors (40401682032).

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

22451693904 is a wasteful number, since it uses less digits than its factorization.

22451693904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49184 (or 49175 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 22451693904 in words is "twenty-two billion, four hundred fifty-one million, six hundred ninety-three thousand, nine hundred four".