22142538264 has 144 divisors (see below), whose sum is σ = 70780764600. Its totient is φ = 5751271680.

The previous prime is 22142538263. The next prime is 22142538331. The reversal of 22142538264 is 46283524122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142538263) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 64492 + ... + 220100.

Almost surely, 2^22142538264 is an apocalyptic number.

22142538264 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 22142538264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35390382300).

22142538264 is an abundant number, since it is smaller than the sum of its proper divisors (48638226336).

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

22142538264 is a wasteful number, since it uses less digits than its factorization.

22142538264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155654 (or 155632 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The spelling of 22142538264 in words is "twenty-two billion, one hundred forty-two million, five hundred thirty-eight thousand, two hundred sixty-four".