722974455616 has 224 divisors, whose sum is σ = 1698298587648. Its totient is φ = 299005378560.

The previous prime is 722974455613. The next prime is 722974455673. The reversal of 722974455616 is 616554479227.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722974455613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318069456 + ... + 318071728.

Almost surely, 2^722974455616 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 722974455616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849149293824).

722974455616 is an abundant number, since it is smaller than the sum of its proper divisors (975324132032).

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

722974455616 is a wasteful number, since it uses less digits than its factorization.

722974455616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569 (or 2559 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 58.

The spelling of 722974455616 in words is "seven hundred twenty-two billion, nine hundred seventy-four million, four hundred fifty-five thousand, six hundred sixteen".