13423687256 has 16 divisors (see below), whose sum is σ = 28765044240. Its totient is φ = 5753008800.

The previous prime is 13423687231. The next prime is 13423687259. The reversal of 13423687256 is 65278632431.

It is a self number, because there is not a number n which added to its sum of digits gives 13423687256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423687259) 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, 119854295 + ... + 119854406.

It is an arithmetic number, because the mean of its divisors is an integer number (1797815265).

Almost surely, 2^13423687256 is an apocalyptic number.

It is an amenable number.

13423687256 is an abundant number, since it is smaller than the sum of its proper divisors (15341356984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13423687256 is a wasteful number, since it uses less digits than its factorization.

13423687256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239708714 (or 239708710 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 47.

The spelling of 13423687256 in words is "thirteen billion, four hundred twenty-three million, six hundred eighty-seven thousand, two hundred fifty-six".