13539955373818 has 16 divisors (see below), whose sum is σ = 20644326687456. Its totient is φ = 6658528670640.

The previous prime is 13539955373803. The next prime is 13539955373843. The reversal of 13539955373818 is 81837355993531.

13539955373818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13539955373818² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126896 + ... + 5621707.

It is an arithmetic number, because the mean of its divisors is an integer number (1290270417966).

Almost surely, 2^{13539955373818} is an apocalyptic number.

13539955373818 is a deficient number, since it is larger than the sum of its proper divisors (7104371313638).

13539955373818 is a wasteful number, since it uses less digits than its factorization.

13539955373818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762989.

The product of its digits is 367416000, while the sum is 70.

The spelling of 13539955373818 in words is "thirteen trillion, five hundred thirty-nine billion, nine hundred fifty-five million, three hundred seventy-three thousand, eight hundred eighteen".