13439817892931 has 8 divisors (see below), whose sum is σ = 13672583430000. Its totient is φ = 13207218089760.

The previous prime is 13439817892913. The next prime is 13439817892939. The reversal of 13439817892931 is 13929871893431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13439817892931 is a prime.

It is a super-2 number, since 2×13439817892931² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13439817892939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41269880 + ... + 41594261.

It is an arithmetic number, because the mean of its divisors is an integer number (1709072928750).

Almost surely, 2^{13439817892931} is an apocalyptic number.

13439817892931 is a deficient number, since it is larger than the sum of its proper divisors (232765537069).

13439817892931 is an equidigital number, since it uses as much as digits as its factorization.

13439817892931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82866949.

The product of its digits is 70543872, while the sum is 68.

The spelling of 13439817892931 in words is "thirteen trillion, four hundred thirty-nine billion, eight hundred seventeen million, eight hundred ninety-two thousand, nine hundred thirty-one".