18072437984913 has 16 divisors (see below), whose sum is σ = 25950349446336. Its totient is φ = 11121422262720.

The previous prime is 18072437984893. The next prime is 18072437984929. The reversal of 18072437984913 is 31948973427081.

It is not a de Polignac number, because 18072437984913 - 2³³ = 18063848050321 is a prime.

It is a super-2 number, since 2×18072437984913² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18072427984913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4274806 + ... + 7376912.

It is an arithmetic number, because the mean of its divisors is an integer number (1621896840396).

Almost surely, 2^{18072437984913} is an apocalyptic number.

18072437984913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18072437984913 is a deficient number, since it is larger than the sum of its proper divisors (7877911461423).

18072437984913 is a wasteful number, since it uses less digits than its factorization.

18072437984913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251504.

The product of its (nonzero) digits is 73156608, while the sum is 66.

The spelling of 18072437984913 in words is "eighteen trillion, seventy-two billion, four hundred thirty-seven million, nine hundred eighty-four thousand, nine hundred thirteen".