18222878173213 has 16 divisors (see below), whose sum is σ = 22123042026624. Its totient is φ = 14652923880960.

The previous prime is 18222878173193. The next prime is 18222878173219. The reversal of 18222878173213 is 31237187822281.

It is not a de Polignac number, because 18222878173213 - 2¹⁷ = 18222878042141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18222878173219) 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, 249366448 + ... + 249439513.

It is an arithmetic number, because the mean of its divisors is an integer number (1382690126664).

Almost surely, 2^{18222878173213} is an apocalyptic number.

It is an amenable number.

18222878173213 is a deficient number, since it is larger than the sum of its proper divisors (3900163853411).

18222878173213 is a wasteful number, since it uses less digits than its factorization.

18222878173213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498806292.

The product of its digits is 3612672, while the sum is 55.

The spelling of 18222878173213 in words is "eighteen trillion, two hundred twenty-two billion, eight hundred seventy-eight million, one hundred seventy-three thousand, two hundred thirteen".