12567057049 has 4 divisors (see below), whose sum is σ = 12612425764. Its totient is φ = 12521688336.

The previous prime is 12567057043. The next prime is 12567057059. The reversal of 12567057049 is 94075076521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94075076521 = 17989 ⋅5229589.

It can be written as a sum of positive squares in 2 ways, for example, as 3208429449 + 9358627600 = 56643^2 + 96740^2 .

It is a cyclic number.

It is not a de Polignac number, because 12567057049 - 2²⁹ = 12030186137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12567057043) 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, 22683942 + ... + 22684495.

It is an arithmetic number, because the mean of its divisors is an integer number (3153106441).

Almost surely, 2^12567057049 is an apocalyptic number.

It is an amenable number.

12567057049 is a deficient number, since it is larger than the sum of its proper divisors (45368715).

12567057049 is an equidigital number, since it uses as much as digits as its factorization.

12567057049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45368714.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 12567057049 in words is "twelve billion, five hundred sixty-seven million, fifty-seven thousand, forty-nine".