22194694656 has 480 divisors, whose sum is σ = 71942270400. Its totient is φ = 6808043520.

The previous prime is 22194694591. The next prime is 22194694667. The reversal of 22194694656 is 65649649122.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96919950 + ... + 96920178.

It is an arithmetic number, because the mean of its divisors is an integer number (149879730).

Almost surely, 2^22194694656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22194694656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35971135200).

22194694656 is an abundant number, since it is smaller than the sum of its proper divisors (49747575744).

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

22194694656 is an equidigital number, since it uses as much as digits as its factorization.

22194694656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 294 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 22194694656 in words is "twenty-two billion, one hundred ninety-four million, six hundred ninety-four thousand, six hundred fifty-six".