13256757111 has 16 divisors (see below), whose sum is σ = 19478028416. Its totient is φ = 7968282336.

The previous prime is 13256757077. The next prime is 13256757113. The reversal of 13256757111 is 11175765231.

It is not a de Polignac number, because 13256757111 - 2¹⁰ = 13256756087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 13256757111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256757113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3950845 + ... + 3954198.

It is an arithmetic number, because the mean of its divisors is an integer number (1217376776).

Almost surely, 2^13256757111 is an apocalyptic number.

13256757111 is a deficient number, since it is larger than the sum of its proper divisors (6221271305).

13256757111 is a wasteful number, since it uses less digits than its factorization.

13256757111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905102.

The product of its digits is 44100, while the sum is 39.

The spelling of 13256757111 in words is "thirteen billion, two hundred fifty-six million, seven hundred fifty-seven thousand, one hundred eleven".