18616341121 has 16 divisors (see below), whose sum is σ = 21792672000. Its totient is φ = 15896114304.

The previous prime is 18616341119. The next prime is 18616341127. The reversal of 18616341121 is 12114361681.

It is not a de Polignac number, because 18616341121 - 2¹ = 18616341119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18616341127) 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, 12976 + ... + 193393.

It is an arithmetic number, because the mean of its divisors is an integer number (1362042000).

Almost surely, 2^18616341121 is an apocalyptic number.

It is an amenable number.

18616341121 is a deficient number, since it is larger than the sum of its proper divisors (3176330879).

18616341121 is an equidigital number, since it uses as much as digits as its factorization.

18616341121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206653 (or 206639 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The spelling of 18616341121 in words is "eighteen billion, six hundred sixteen million, three hundred forty-one thousand, one hundred twenty-one".