13398289631861 has 16 divisors (see below), whose sum is σ = 14170270752960. Its totient is φ = 12633026250240.

The previous prime is 13398289631827. The next prime is 13398289631887. The reversal of 13398289631861 is 16813698289331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13398289631861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13398289631791 and 13398289631800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13398289631761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12587141 + ... + 13610021.

It is an arithmetic number, because the mean of its divisors is an integer number (885641922060).

Almost surely, 2^{13398289631861} is an apocalyptic number.

It is an amenable number.

13398289631861 is a deficient number, since it is larger than the sum of its proper divisors (771981121099).

13398289631861 is a wasteful number, since it uses less digits than its factorization.

13398289631861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026164.

The product of its digits is 80621568, while the sum is 68.

The spelling of 13398289631861 in words is "thirteen trillion, three hundred ninety-eight billion, two hundred eighty-nine million, six hundred thirty-one thousand, eight hundred sixty-one".