18455343459915 has 16 divisors (see below), whose sum is σ = 29591779845888. Its totient is φ = 9821773075296.

The previous prime is 18455343459911. The next prime is 18455343459961. The reversal of 18455343459915 is 51995434355481.

It is not a de Polignac number, because 18455343459915 - 2² = 18455343459911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18455343459911) 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, 1317290887 + ... + 1317304896.

It is an arithmetic number, because the mean of its divisors is an integer number (1849486240368).

Almost surely, 2^{18455343459915} is an apocalyptic number.

18455343459915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18455343459915 is a deficient number, since it is larger than the sum of its proper divisors (11136436385973).

18455343459915 is a wasteful number, since it uses less digits than its factorization.

18455343459915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634596258.

The product of its digits is 233280000, while the sum is 66.

The spelling of 18455343459915 in words is "eighteen trillion, four hundred fifty-five billion, three hundred forty-three million, four hundred fifty-nine thousand, nine hundred fifteen".