13401193121687 has 32 divisors (see below), whose sum is σ = 16349695672320. Its totient is φ = 10728315894240.

The previous prime is 13401193121681. The next prime is 13401193121731. The reversal of 13401193121687 is 78612139110431.

It is not a de Polignac number, because 13401193121687 - 2²⁰ = 13401192073111 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 (13401193121681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280083788 + ... + 280131630.

It is an arithmetic number, because the mean of its divisors is an integer number (510927989760).

Almost surely, 2^{13401193121687} is an apocalyptic number.

13401193121687 is a deficient number, since it is larger than the sum of its proper divisors (2948502550633).

13401193121687 is a wasteful number, since it uses less digits than its factorization.

13401193121687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77603.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 13401193121687 in words is "thirteen trillion, four hundred one billion, one hundred ninety-three million, one hundred twenty-one thousand, six hundred eighty-seven".