10572660771721 has 4 divisors (see below), whose sum is σ = 10677340581444. Its totient is φ = 10467980962000.

The previous prime is 10572660771707. The next prime is 10572660771733. The reversal of 10572660771721 is 12717706627501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5911530900496 + 4661129871225 = 2431364^2 + 2158965^2 .

It is a cyclic number.

It is not a de Polignac number, because 10572660771721 - 2⁵ = 10572660771689 is a prime.

It is a super-2 number, since 2×10572660771721² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10572660771521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52339904710 + ... + 52339904911.

It is an arithmetic number, because the mean of its divisors is an integer number (2669335145361).

Almost surely, 2^{10572660771721} is an apocalyptic number.

It is an amenable number.

10572660771721 is a deficient number, since it is larger than the sum of its proper divisors (104679809723).

10572660771721 is a wasteful number, since it uses less digits than its factorization.

10572660771721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104679809722.

The product of its (nonzero) digits is 1728720, while the sum is 52.

The spelling of 10572660771721 in words is "ten trillion, five hundred seventy-two billion, six hundred sixty million, seven hundred seventy-one thousand, seven hundred twenty-one".