22215720960 has 544 divisors, whose sum is σ = 82543272960. Its totient is φ = 5733089280.

The previous prime is 22215720959. The next prime is 22215720983. The reversal of 22215720960 is 6902751222.

It is a happy number.

22215720960 is a `hidden beast` number, since 2 + 2 + 21 + 572 + 0 + 9 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 716636145 + ... + 716636175.

Almost surely, 2^22215720960 is an apocalyptic number.

22215720960 is a gapful number since it is divisible by the number (20) 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 22215720960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41271636480).

22215720960 is an abundant number, since it is smaller than the sum of its proper divisors (60327552000).

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

22215720960 is an frugal number, since it uses more digits than its factorization.

22215720960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 22215720960 in words is "twenty-two billion, two hundred fifteen million, seven hundred twenty thousand, nine hundred sixty".