22064759640 has 896 divisors, whose sum is σ = 96097259520. Its totient is φ = 4422988800.

The previous prime is 22064759617. The next prime is 22064759669. The reversal of 22064759640 is 4695746022.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 69604762 + ... + 69605078.

Almost surely, 2^22064759640 is an apocalyptic number.

22064759640 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 22064759640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48048629760).

22064759640 is an abundant number, since it is smaller than the sum of its proper divisors (74032499880).

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

22064759640 is a wasteful number, since it uses less digits than its factorization.

22064759640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 22064759640 in words is "twenty-two billion, sixty-four million, seven hundred fifty-nine thousand, six hundred forty".