13718168987 has 4 divisors (see below), whose sum is σ = 13718592096. Its totient is φ = 13717745880.

The previous prime is 13718168941. The next prime is 13718168993. The reversal of 13718168987 is 78986181731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78986181731 = 29 ⋅2723661439.

It is a cyclic number.

It is not a de Polignac number, because 13718168987 - 2⁶ = 13718168923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13718168927) 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, 158483 + ... + 229244.

It is an arithmetic number, because the mean of its divisors is an integer number (3429648024).

Almost surely, 2^13718168987 is an apocalyptic number.

13718168987 is a deficient number, since it is larger than the sum of its proper divisors (423109).

13718168987 is an equidigital number, since it uses as much as digits as its factorization.

13718168987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423108.

The product of its digits is 4064256, while the sum is 59.

The spelling of 13718168987 in words is "thirteen billion, seven hundred eighteen million, one hundred sixty-eight thousand, nine hundred eighty-seven".