18340518203137 has 16 divisors (see below), whose sum is σ = 20642133875328. Its totient is φ = 16168450129920.

The previous prime is 18340518203123. The next prime is 18340518203177. The reversal of 18340518203137 is 73130281504381.

It is a cyclic number.

It is not a de Polignac number, because 18340518203137 - 2²⁷ = 18340383985409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18340518203107) 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, 47505664 + ... + 47890177.

It is an arithmetic number, because the mean of its divisors is an integer number (1290133367208).

Almost surely, 2^{18340518203137} is an apocalyptic number.

It is an amenable number.

18340518203137 is a deficient number, since it is larger than the sum of its proper divisors (2301615672191).

18340518203137 is a wasteful number, since it uses less digits than its factorization.

18340518203137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95396520.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 18340518203137 in words is "eighteen trillion, three hundred forty billion, five hundred eighteen million, two hundred three thousand, one hundred thirty-seven".