722488991679 has 36 divisors (see below), whose sum is σ = 1291482172656. Its totient is φ = 381093088896.

The previous prime is 722488991647. The next prime is 722488991723. The reversal of 722488991679 is 976199884227.

722488991679 is a `hidden beast` number, since 72 + 2 + 488 + 9 + 9 + 1 + 6 + 79 = 666.

It is not a de Polignac number, because 722488991679 - 2⁵ = 722488991647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722488941679) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33918582 + ... + 33939875.

It is an arithmetic number, because the mean of its divisors is an integer number (35874504796).

Almost surely, 2^722488991679 is an apocalyptic number.

722488991679 is a deficient number, since it is larger than the sum of its proper divisors (568993180977).

722488991679 is a wasteful number, since it uses less digits than its factorization.

722488991679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67858496 (or 67858480 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 72.

The spelling of 722488991679 in words is "seven hundred twenty-two billion, four hundred eighty-eight million, nine hundred ninety-one thousand, six hundred seventy-nine".