18722722426134 has 32 divisors (see below), whose sum is σ = 39659392116576. Its totient is φ = 5872125043200.

The previous prime is 18722722426123. The next prime is 18722722426157. The reversal of 18722722426134 is 43162422722781.

It is a super-2 number, since 2×18722722426134² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25736817 + ... + 26454284.

It is an arithmetic number, because the mean of its divisors is an integer number (1239356003643).

Almost surely, 2^{18722722426134} is an apocalyptic number.

18722722426134 is an abundant number, since it is smaller than the sum of its proper divisors (20936669690442).

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

18722722426134 is a wasteful number, since it uses less digits than its factorization.

18722722426134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52194640.

The product of its digits is 3612672, while the sum is 51.

The spelling of 18722722426134 in words is "eighteen trillion, seven hundred twenty-two billion, seven hundred twenty-two million, four hundred twenty-six thousand, one hundred thirty-four".