18396137177305 has 16 divisors (see below), whose sum is σ = 22149265944960. Its totient is φ = 14667713753472.

The previous prime is 18396137177237. The next prime is 18396137177317. The reversal of 18396137177305 is 50377173169381.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18396137177305 - 2⁷ = 18396137177177 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, 2415499 + ... + 6528928.

It is an arithmetic number, because the mean of its divisors is an integer number (1384329121560).

Almost surely, 2^{18396137177305} is an apocalyptic number.

It is an amenable number.

18396137177305 is a deficient number, since it is larger than the sum of its proper divisors (3753128767655).

18396137177305 is an equidigital number, since it uses as much as digits as its factorization.

18396137177305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8945808.

The product of its (nonzero) digits is 20003760, while the sum is 61.

The spelling of 18396137177305 in words is "eighteen trillion, three hundred ninety-six billion, one hundred thirty-seven million, one hundred seventy-seven thousand, three hundred five".