721352026422 has 48 divisors (see below), whose sum is σ = 1570711484160. Its totient is φ = 239255856000.

The previous prime is 721352026399. The next prime is 721352026433. The reversal of 721352026422 is 224620253127.

721352026422 is a `hidden beast` number, since 7 + 2 + 1 + 3 + 5 + 2 + 0 + 2 + 642 + 2 = 666.

It is a super-2 number, since 2×721352026422² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3485547 + ... + 3686697.

It is an arithmetic number, because the mean of its divisors is an integer number (32723155920).

Almost surely, 2^721352026422 is an apocalyptic number.

721352026422 is an abundant number, since it is smaller than the sum of its proper divisors (849359457738).

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

721352026422 is a wasteful number, since it uses less digits than its factorization.

721352026422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202149 (or 202146 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

Adding to 721352026422 its reverse (224620253127), we get a palindrome (945972279549).

The spelling of 721352026422 in words is "seven hundred twenty-one billion, three hundred fifty-two million, twenty-six thousand, four hundred twenty-two".