722491843320 has 768 divisors, whose sum is σ = 2744198352000. Its totient is φ = 168046534656.

The previous prime is 722491843303. The next prime is 722491843363. The reversal of 722491843320 is 23348194227.

722491843320 is a `hidden beast` number, since 7 + 2 + 249 + 1 + 84 + 3 + 320 = 666.

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 191 ways as a sum of consecutive naturals, for example, 661016694 + ... + 661017786.

Almost surely, 2^722491843320 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 722491843320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372099176000).

722491843320 is an abundant number, since it is smaller than the sum of its proper divisors (2021706508680).

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

722491843320 is a wasteful number, since it uses less digits than its factorization.

722491843320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1228 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 722491843320 in words is "seven hundred twenty-two billion, four hundred ninety-one million, eight hundred forty-three thousand, three hundred twenty".