722864379438 has 80 divisors (see below), whose sum is σ = 1636756702416. Its totient is φ = 238435591680.

The previous prime is 722864379353. The next prime is 722864379467. The reversal of 722864379438 is 834973468227.

722864379438 is a `hidden beast` number, since 7 + 2 + 2 + 86 + 437 + 94 + 38 = 666.

It is a super-3 number, since 3×722864379438³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 39 ways as a sum of consecutive naturals, for example, 7443120 + ... + 7539612.

Almost surely, 2^722864379438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722864379438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818378351208).

722864379438 is an abundant number, since it is smaller than the sum of its proper divisors (913892322978).

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

722864379438 is a wasteful number, since it uses less digits than its factorization.

722864379438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96991 (or 96982 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 63.

The spelling of 722864379438 in words is "seven hundred twenty-two billion, eight hundred sixty-four million, three hundred seventy-nine thousand, four hundred thirty-eight".