22136791320 has 640 divisors, whose sum is σ = 91496908800. Its totient is φ = 4687248384.

The previous prime is 22136791297. The next prime is 22136791351. The reversal of 22136791320 is 2319763122.

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 159 ways as a sum of consecutive naturals, for example, 20252694 + ... + 20253786.

It is an arithmetic number, because the mean of its divisors is an integer number (142963920).

Almost surely, 2^22136791320 is an apocalyptic number.

22136791320 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 22136791320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45748454400).

22136791320 is an abundant number, since it is smaller than the sum of its proper divisors (69360117480).

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

22136791320 is a wasteful number, since it uses less digits than its factorization.

22136791320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 22136791320 in words is "twenty-two billion, one hundred thirty-six million, seven hundred ninety-one thousand, three hundred twenty".