721334251626060 has 96 divisors (see below), whose sum is σ = 2021861977454592. Its totient is φ = 192153365268480.

The previous prime is 721334251626041. The next prime is 721334251626143. The reversal of 721334251626060 is 60626152433127.

It is a happy number.

It is a super-2 number, since 2×721334251626060² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 483200517 + ... + 484691043.

It is an arithmetic number, because the mean of its divisors is an integer number (21061062265152).

Almost surely, 2^{721334251626060} is an apocalyptic number.

It is an amenable number.

721334251626060 is an abundant number, since it is smaller than the sum of its proper divisors (1300527725828532).

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

721334251626060 is a wasteful number, since it uses less digits than its factorization.

721334251626060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499023 (or 1499021 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 721334251626060 in words is "seven hundred twenty-one trillion, three hundred thirty-four billion, two hundred fifty-one million, six hundred twenty-six thousand, sixty".