8518391738137 has 4 divisors (see below), whose sum is σ = 8518427752320. Its totient is φ = 8518355723956.

The previous prime is 8518391738083. The next prime is 8518391738141. The reversal of 8518391738137 is 7318371938158.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8518391738137 - 2⁷ = 8518391738009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8518391738177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17649937 + ... + 18126142.

It is an arithmetic number, because the mean of its divisors is an integer number (2129606938080).

Almost surely, 2^{8518391738137} is an apocalyptic number.

It is an amenable number.

8518391738137 is a deficient number, since it is larger than the sum of its proper divisors (36014183).

8518391738137 is a wasteful number, since it uses less digits than its factorization.

8518391738137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36014182.

The product of its digits is 30481920, while the sum is 64.

The spelling of 8518391738137 in words is "eight trillion, five hundred eighteen billion, three hundred ninety-one million, seven hundred thirty-eight thousand, one hundred thirty-seven".