22721518260870 has 64 divisors (see below), whose sum is σ = 64065148003584. Its totient is φ = 5084535553920.

The previous prime is 22721518260841. The next prime is 22721518260893. The reversal of 22721518260870 is 7806281512722.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2648191312 + ... + 2648199891.

It is an arithmetic number, because the mean of its divisors is an integer number (1001017937556).

Almost surely, 2^{22721518260870} is an apocalyptic number.

22721518260870 is an abundant number, since it is smaller than the sum of its proper divisors (41343629742714).

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

22721518260870 is a wasteful number, since it uses less digits than its factorization.

22721518260870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296391237.

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 22721518260870 in words is "twenty-two trillion, seven hundred twenty-one billion, five hundred eighteen million, two hundred sixty thousand, eight hundred seventy".