12572126571 has 4 divisors (see below), whose sum is σ = 16762835432. Its totient is φ = 8381417712.

The previous prime is 12572126557. The next prime is 12572126573. The reversal of 12572126571 is 17562127521.

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

It is not a de Polignac number, because 12572126571 - 2⁷ = 12572126443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12572126573) 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, 2095354426 + ... + 2095354431.

It is an arithmetic number, because the mean of its divisors is an integer number (4190708858).

Almost surely, 2^12572126571 is an apocalyptic number.

12572126571 is a deficient number, since it is larger than the sum of its proper divisors (4190708861).

12572126571 is an equidigital number, since it uses as much as digits as its factorization.

12572126571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190708860.

The product of its digits is 58800, while the sum is 39.

The spelling of 12572126571 in words is "twelve billion, five hundred seventy-two million, one hundred twenty-six thousand, five hundred seventy-one".