22339711818 has 64 divisors (see below), whose sum is σ = 50247475200. Its totient is φ = 7356374640.

The previous prime is 22339711817. The next prime is 22339711819. The reversal of 22339711818 is 81811793322.

It is an interprime number because it is at equal distance from previous prime (22339711817) and next prime (22339711819).

It is a super-2 number, since 2×22339711818² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (22339711811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2392563 + ... + 2401881.

It is an arithmetic number, because the mean of its divisors is an integer number (785116800).

Almost surely, 2^22339711818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22339711818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25123737600).

22339711818 is an abundant number, since it is smaller than the sum of its proper divisors (27907763382).

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

22339711818 is a wasteful number, since it uses less digits than its factorization.

22339711818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9864 (or 9858 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 22339711818 in words is "twenty-two billion, three hundred thirty-nine million, seven hundred eleven thousand, eight hundred eighteen".