22394274864 has 160 divisors (see below), whose sum is σ = 65196702144. Its totient is φ = 6577459200.

The previous prime is 22394274863. The next prime is 22394274869. The reversal of 22394274864 is 46847249322.

It is not an unprimeable number, because it can be changed into a prime (22394274863) 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, 1214514 + ... + 1232814.

Almost surely, 2^22394274864 is an apocalyptic number.

22394274864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22394274864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32598351072).

22394274864 is an abundant number, since it is smaller than the sum of its proper divisors (42802427280).

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

22394274864 is a wasteful number, since it uses less digits than its factorization.

22394274864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18415 (or 18409 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 51.

The spelling of 22394274864 in words is "twenty-two billion, three hundred ninety-four million, two hundred seventy-four thousand, eight hundred sixty-four".