722770145975520 has 768 divisors, whose sum is σ = 2576449016064000. Its totient is φ = 191573843281920.

The previous prime is 722770145975497. The next prime is 722770145975531. The reversal of 722770145975520 is 25579541077227.

722770145975520 is a `hidden beast` number, since 7 + 2 + 2 + 7 + 7 + 0 + 14 + 5 + 97 + 5 + 520 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 41322393975 + ... + 41322411465.

It is an arithmetic number, because the mean of its divisors is an integer number (3354751323000).

Almost surely, 2^{722770145975520} 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 722770145975520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288224508032000).

722770145975520 is an abundant number, since it is smaller than the sum of its proper divisors (1853678870088480).

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

722770145975520 is a wasteful number, since it uses less digits than its factorization.

722770145975520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18235 (or 18209 counting only the distinct ones).

The product of its (nonzero) digits is 86436000, while the sum is 63.

The spelling of 722770145975520 in words is "seven hundred twenty-two trillion, seven hundred seventy billion, one hundred forty-five million, nine hundred seventy-five thousand, five hundred twenty".