12857264402441 has 4 divisors (see below), whose sum is σ = 12857285514132. Its totient is φ = 12857243290752.

The previous prime is 12857264402317. The next prime is 12857264402471. The reversal of 12857264402441 is 14420446275821.

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 505835310841 + 12351429091600 = 711221^2 + 3514460^2 .

It is a cyclic number.

It is not a de Polignac number, because 12857264402441 - 2²² = 12857260208137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12857264402441.

It is not an unprimeable number, because it can be changed into a prime (12857264402471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9614336 + ... + 10869681.

It is an arithmetic number, because the mean of its divisors is an integer number (3214321378533).

Almost surely, 2^{12857264402441} is an apocalyptic number.

It is an amenable number.

12857264402441 is a deficient number, since it is larger than the sum of its proper divisors (21111691).

12857264402441 is an equidigital number, since it uses as much as digits as its factorization.

12857264402441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21111690.

The product of its (nonzero) digits is 3440640, while the sum is 50.

The spelling of 12857264402441 in words is "twelve trillion, eight hundred fifty-seven billion, two hundred sixty-four million, four hundred two thousand, four hundred forty-one".