12572270581 has 8 divisors (see below), whose sum is σ = 13540248344. Its totient is φ = 11604418560.

The previous prime is 12572270573. The next prime is 12572270591. The reversal of 12572270581 is 18507227521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4627400625 + 7944869956 = 68025^2 + 89134^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12572270581 - 2³ = 12572270573 is a prime.

It is a super-2 number, since 2×12572270581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12572270551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331465 + ... + 367441.

It is an arithmetic number, because the mean of its divisors is an integer number (1692531043).

Almost surely, 2^12572270581 is an apocalyptic number.

It is an amenable number.

12572270581 is a deficient number, since it is larger than the sum of its proper divisors (967977763).

12572270581 is a wasteful number, since it uses less digits than its factorization.

12572270581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62871.

The product of its (nonzero) digits is 78400, while the sum is 40.

The spelling of 12572270581 in words is "twelve billion, five hundred seventy-two million, two hundred seventy thousand, five hundred eighty-one".