18354915754915 has 16 divisors (see below), whose sum is σ = 22497645405312. Its totient is φ = 14369521336704.

The previous prime is 18354915754909. The next prime is 18354915754963. The reversal of 18354915754915 is 51945751945381.

It is a cyclic number.

It is not a de Polignac number, because 18354915754915 - 2³ = 18354915754907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3695604 + ... + 7096993.

It is an arithmetic number, because the mean of its divisors is an integer number (1406102837832).

Almost surely, 2^{18354915754915} is an apocalyptic number.

18354915754915 is a deficient number, since it is larger than the sum of its proper divisors (4142729650397).

18354915754915 is a wasteful number, since it uses less digits than its factorization.

18354915754915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10799886.

The product of its digits is 136080000, while the sum is 67.

The spelling of 18354915754915 in words is "eighteen trillion, three hundred fifty-four billion, nine hundred fifteen million, seven hundred fifty-four thousand, nine hundred fifteen".