22191512064 has 160 divisors (see below), whose sum is σ = 60234240000. Its totient is φ = 7258927104.

The previous prime is 22191512051. The next prime is 22191512069. The reversal of 22191512064 is 46021519122.

It is not an unprimeable number, because it can be changed into a prime (22191512069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24146997 + ... + 24147915.

It is an arithmetic number, because the mean of its divisors is an integer number (376464000).

Almost surely, 2^22191512064 is an apocalyptic number.

22191512064 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 22191512064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30117120000).

22191512064 is an abundant number, since it is smaller than the sum of its proper divisors (38042727936).

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

22191512064 is an equidigital number, since it uses as much as digits as its factorization.

22191512064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1202 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 22191512064 in words is "twenty-two billion, one hundred ninety-one million, five hundred twelve thousand, sixty-four".