9720572572572 has 48 divisors (see below), whose sum is σ = 22724923237632. Its totient is φ = 3233965786240.

The previous prime is 9720572572561. The next prime is 9720572572621. The reversal of 9720572572572 is 2752752750279.

It is a happy number.

It is a super-2 number, since 2×9720572572572² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48049072 + ... + 48250952.

It is an arithmetic number, because the mean of its divisors is an integer number (473435900784).

Almost surely, 2^{9720572572572} is an apocalyptic number.

It is an amenable number.

9720572572572 is an abundant number, since it is smaller than the sum of its proper divisors (13004350665060).

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

9720572572572 is a wasteful number, since it uses less digits than its factorization.

9720572572572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209578 (or 209576 counting only the distinct ones).

The product of its (nonzero) digits is 43218000, while the sum is 60.

The spelling of 9720572572572 in words is "nine trillion, seven hundred twenty billion, five hundred seventy-two million, five hundred seventy-two thousand, five hundred seventy-two".