13256870713 has 4 divisors (see below), whose sum is σ = 13538931840. Its totient is φ = 12974809588.

The previous prime is 13256870707. The next prime is 13256870771. The reversal of 13256870713 is 31707865231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13256870713 is a prime.

It is a super-2 number, since 2×13256870713² (a number of 21 digits) contains 22 as substring.

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 13256870713.

It is not an unprimeable number, because it can be changed into a prime (13256874713) 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, 141030493 + ... + 141030586.

It is an arithmetic number, because the mean of its divisors is an integer number (3384732960).

Almost surely, 2^13256870713 is an apocalyptic number.

It is an amenable number.

13256870713 is a deficient number, since it is larger than the sum of its proper divisors (282061127).

13256870713 is an equidigital number, since it uses as much as digits as its factorization.

13256870713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282061126.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 13256870713 in words is "thirteen billion, two hundred fifty-six million, eight hundred seventy thousand, seven hundred thirteen".