12557374205 has 4 divisors (see below), whose sum is σ = 15068849052. Its totient is φ = 10045899360.

The previous prime is 12557374163. The next prime is 12557374213. The reversal of 12557374205 is 50247375521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50247375521 = 7 ⋅7178196503.

It can be written as a sum of positive squares in 2 ways, for example, as 4729725529 + 7827648676 = 68773^2 + 88474^2 .

It is not a de Polignac number, because 12557374205 - 2²⁴ = 12540596989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255737416 + ... + 1255737425.

It is an arithmetic number, because the mean of its divisors is an integer number (3767212263).

Almost surely, 2^12557374205 is an apocalyptic number.

It is an amenable number.

12557374205 is a deficient number, since it is larger than the sum of its proper divisors (2511474847).

12557374205 is an equidigital number, since it uses as much as digits as its factorization.

12557374205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511474846.

The product of its (nonzero) digits is 294000, while the sum is 41.

The spelling of 12557374205 in words is "twelve billion, five hundred fifty-seven million, three hundred seventy-four thousand, two hundred five".