22156072764 has 48 divisors (see below), whose sum is σ = 59162546688. Its totient is φ = 6321768768.

The previous prime is 22156072747. The next prime is 22156072781. The reversal of 22156072764 is 46727065122.

It is an interprime number because it is at equal distance from previous prime (22156072747) and next prime (22156072781).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115087 + ... + 239910.

It is an arithmetic number, because the mean of its divisors is an integer number (1232553056).

Almost surely, 2^22156072764 is an apocalyptic number.

It is an amenable number.

22156072764 is an abundant number, since it is smaller than the sum of its proper divisors (37006473924).

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

22156072764 is a wasteful number, since it uses less digits than its factorization.

22156072764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355754 (or 355752 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 22156072764 in words is "twenty-two billion, one hundred fifty-six million, seventy-two thousand, seven hundred sixty-four".