6572520872 has 8 divisors (see below), whose sum is σ = 12323476650. Its totient is φ = 3286260432.

The previous prime is 6572520853. The next prime is 6572520883. The reversal of 6572520872 is 2780252756.

It can be written as a sum of positive squares in only one way, i.e., 4322536516 + 2249984356 = 65746^2 + 47434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×6572520872² = 86396061225751280768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410782547 + ... + 410782562.

Almost surely, 2^6572520872 is an apocalyptic number.

It is an amenable number.

6572520872 is a deficient number, since it is larger than the sum of its proper divisors (5750955778).

6572520872 is a wasteful number, since it uses less digits than its factorization.

6572520872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821565115 (or 821565111 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The square root of 6572520872 is about 81071.0853017276. The cubic root of 6572520872 is about 1873.1705649483.

The spelling of 6572520872 in words is "six billion, five hundred seventy-two million, five hundred twenty thousand, eight hundred seventy-two".