2256666412513 has 4 divisors (see below), whose sum is σ = 2389411495620. Its totient is φ = 2123921329408.

The previous prime is 2256666412501. The next prime is 2256666412543. The reversal of 2256666412513 is 3152146666522.

2256666412513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1553991614464 + 702674798049 = 1246592^2 + 838257^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256666412513 - 2²¹ = 2256664315361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256666412543) 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, 66372541528 + ... + 66372541561.

It is an arithmetic number, because the mean of its divisors is an integer number (597352873905).

Almost surely, 2^{2256666412513} is an apocalyptic number.

It is an amenable number.

2256666412513 is a deficient number, since it is larger than the sum of its proper divisors (132745083107).

2256666412513 is a wasteful number, since it uses less digits than its factorization.

2256666412513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132745083106.

The product of its digits is 3110400, while the sum is 49.

The spelling of 2256666412513 in words is "two trillion, two hundred fifty-six billion, six hundred sixty-six million, four hundred twelve thousand, five hundred thirteen".