18091676418018 has 96 divisors (see below), whose sum is σ = 43478309093184. Its totient is φ = 5000274453888.

The previous prime is 18091676418001. The next prime is 18091676418019. The reversal of 18091676418018 is 81081467619081.

It is a super-2 number, since 2×18091676418018² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18091676418019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2924880 + ... + 6688667.

It is an arithmetic number, because the mean of its divisors is an integer number (452899053054).

Almost surely, 2^{18091676418018} is an apocalyptic number.

18091676418018 is an abundant number, since it is smaller than the sum of its proper divisors (25386632675166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18091676418018 is a wasteful number, since it uses less digits than its factorization.

18091676418018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9613776 (or 9613769 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 60.

The spelling of 18091676418018 in words is "eighteen trillion, ninety-one billion, six hundred seventy-six million, four hundred eighteen thousand, eighteen".