722669126256 has 480 divisors, whose sum is σ = 2579827261440. Its totient is φ = 183414067200.

The previous prime is 722669126237. The next prime is 722669126273. The reversal of 722669126256 is 652621966227.

722669126256 is a `hidden beast` number, since 7 + 2 + 2 + 6 + 6 + 9 + 1 + 2 + 625 + 6 = 666.

It is a super-2 number, since 2×722669126256² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 88223121 + ... + 88231311.

It is an arithmetic number, because the mean of its divisors is an integer number (5374640128).

Almost surely, 2^722669126256 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 722669126256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289913630720).

722669126256 is an abundant number, since it is smaller than the sum of its proper divisors (1857158135184).

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

722669126256 is a wasteful number, since it uses less digits than its factorization.

722669126256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8405 (or 8396 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 722669126256 in words is "seven hundred twenty-two billion, six hundred sixty-nine million, one hundred twenty-six thousand, two hundred fifty-six".