13917543399 has 12 divisors (see below), whose sum is σ = 20130331000. Its totient is φ = 9265802544.

The previous prime is 13917543397. The next prime is 13917543401. The reversal of 13917543399 is 99334571931.

It is a happy number.

13917543399 is a `hidden beast` number, since 1 + 3 + 9 + 1 + 7 + 543 + 3 + 99 = 666.

It is an interprime number because it is at equal distance from previous prime (13917543397) and next prime (13917543401).

It is not a de Polignac number, because 13917543399 - 2¹ = 13917543397 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 (13917543397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1039624 + ... + 1052925.

Almost surely, 2^13917543399 is an apocalyptic number.

13917543399 is a deficient number, since it is larger than the sum of its proper divisors (6212787601).

13917543399 is a wasteful number, since it uses less digits than its factorization.

13917543399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093294 (or 2093291 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 54.

The spelling of 13917543399 in words is "thirteen billion, nine hundred seventeen million, five hundred forty-three thousand, three hundred ninety-nine".