13256382775 has 12 divisors (see below), whose sum is σ = 16490779344. Its totient is φ = 10571000000.

The previous prime is 13256382773. The next prime is 13256382779. The reversal of 13256382775 is 57728365231.

It is not a de Polignac number, because 13256382775 - 2¹ = 13256382773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256382773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 844726 + ... + 860275.

It is an arithmetic number, because the mean of its divisors is an integer number (1374231612).

Almost surely, 2^13256382775 is an apocalyptic number.

13256382775 is a deficient number, since it is larger than the sum of its proper divisors (3234396569).

13256382775 is a wasteful number, since it uses less digits than its factorization.

13256382775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705322 (or 1705317 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 49.

The spelling of 13256382775 in words is "thirteen billion, two hundred fifty-six million, three hundred eighty-two thousand, seven hundred seventy-five".