13957799519 has 4 divisors (see below), whose sum is σ = 13961655696. Its totient is φ = 13953943344.

The previous prime is 13957799501. The next prime is 13957799521. The reversal of 13957799519 is 91599775931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91599775931 = 61 ⋅1501635671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13957799519 is a prime.

It is a super-2 number, since 2×13957799519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13957799539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1922654 + ... + 1929899.

It is an arithmetic number, because the mean of its divisors is an integer number (3490413924).

Almost surely, 2^13957799519 is an apocalyptic number.

13957799519 is a deficient number, since it is larger than the sum of its proper divisors (3856177).

13957799519 is an equidigital number, since it uses as much as digits as its factorization.

13957799519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856176.

The product of its digits is 24111675, while the sum is 65.

The spelling of 13957799519 in words is "thirteen billion, nine hundred fifty-seven million, seven hundred ninety-nine thousand, five hundred nineteen".