722864379439 has 16 divisors (see below), whose sum is σ = 727295675904. Its totient is φ = 718449472800.

The previous prime is 722864379353. The next prime is 722864379467. The reversal of 722864379439 is 934973468227.

It is a cyclic number.

It is not a de Polignac number, because 722864379439 - 2³⁷ = 585425425967 is a prime.

It is a super-2 number, since 2×722864379439² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722864379499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208737622 + ... + 208741084.

It is an arithmetic number, because the mean of its divisors is an integer number (45455979744).

Almost surely, 2^722864379439 is an apocalyptic number.

722864379439 is a deficient number, since it is larger than the sum of its proper divisors (4431296465).

722864379439 is a wasteful number, since it uses less digits than its factorization.

722864379439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478.

The product of its digits is 109734912, while the sum is 64.

The spelling of 722864379439 in words is "seven hundred twenty-two billion, eight hundred sixty-four million, three hundred seventy-nine thousand, four hundred thirty-nine".