22720660905888 has 144 divisors (see below), whose sum is σ = 70609568702400. Its totient is φ = 6872947952640.

The previous prime is 22720660905871. The next prime is 22720660905983. The reversal of 22720660905888 is 88850906602722.

22720660905888 is a `hidden beast` number, since 2 + 27 + 20 + 6 + 6 + 0 + 9 + 0 + 588 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4499628 + ... + 8104811.

It is an arithmetic number, because the mean of its divisors is an integer number (490344227100).

Almost surely, 2^{22720660905888} is an apocalyptic number.

It is an amenable number.

22720660905888 is an abundant number, since it is smaller than the sum of its proper divisors (47888907796512).

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

22720660905888 is a wasteful number, since it uses less digits than its factorization.

22720660905888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12605035 (or 12605024 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 22720660905888 in words is "twenty-two trillion, seven hundred twenty billion, six hundred sixty million, nine hundred five thousand, eight hundred eighty-eight".