13440365855 has 16 divisors (see below), whose sum is σ = 18483863040. Its totient is φ = 9190570272.

The previous prime is 13440365833. The next prime is 13440365929. The reversal of 13440365855 is 55856304431.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13440365855 - 2⁸ = 13440365599 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, 522269 + ... + 547398.

It is an arithmetic number, because the mean of its divisors is an integer number (1155241440).

Almost surely, 2^13440365855 is an apocalyptic number.

13440365855 is a deficient number, since it is larger than the sum of its proper divisors (5043497185).

13440365855 is a wasteful number, since it uses less digits than its factorization.

13440365855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070038.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 13440365855 in words is "thirteen billion, four hundred forty million, three hundred sixty-five thousand, eight hundred fifty-five".