13990171423187 has 16 divisors (see below), whose sum is σ = 14179599624960. Its totient is φ = 13801908794400.

The previous prime is 13990171423183. The next prime is 13990171423297. The reversal of 13990171423187 is 78132417109931.

It is a cyclic number.

It is not a de Polignac number, because 13990171423187 - 2² = 13990171423183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13990171423183) 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, 55229612 + ... + 55482342.

It is an arithmetic number, because the mean of its divisors is an integer number (886224976560).

Almost surely, 2^{13990171423187} is an apocalyptic number.

13990171423187 is a deficient number, since it is larger than the sum of its proper divisors (189428201773).

13990171423187 is a wasteful number, since it uses less digits than its factorization.

13990171423187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255034.

The product of its (nonzero) digits is 2286144, while the sum is 56.

The spelling of 13990171423187 in words is "thirteen trillion, nine hundred ninety billion, one hundred seventy-one million, four hundred twenty-three thousand, one hundred eighty-seven".