22717120720 has 40 divisors (see below), whose sum is σ = 60362636544. Its totient is φ = 7788726912.

The previous prime is 22717120709. The next prime is 22717120733. The reversal of 22717120720 is 2702171722.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20282584 + ... + 20283703.

Almost surely, 2^22717120720 is an apocalyptic number.

22717120720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22717120720 is an abundant number, since it is smaller than the sum of its proper divisors (37645515824).

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

22717120720 is a wasteful number, since it uses less digits than its factorization.

22717120720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40566307 (or 40566301 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 31.

The spelling of 22717120720 in words is "twenty-two billion, seven hundred seventeen million, one hundred twenty thousand, seven hundred twenty".