13440726455 has 16 divisors (see below), whose sum is σ = 17372560800. Its totient is φ = 9923741568.

The previous prime is 13440726443. The next prime is 13440726463. The reversal of 13440726455 is 55462704431.

It is not a de Polignac number, because 13440726455 - 2⁸ = 13440726199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456521 + ... + 485069.

It is an arithmetic number, because the mean of its divisors is an integer number (1085785050).

Almost surely, 2^13440726455 is an apocalyptic number.

13440726455 is a deficient number, since it is larger than the sum of its proper divisors (3931834345).

13440726455 is a wasteful number, since it uses less digits than its factorization.

13440726455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35810.

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 13440726455 in words is "thirteen billion, four hundred forty million, seven hundred twenty-six thousand, four hundred fifty-five".