681354873422 has 32 divisors (see below), whose sum is σ = 1030241013984. Its totient is φ = 337954492800.

The previous prime is 681354873389. The next prime is 681354873443. The reversal of 681354873422 is 224378453186.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282601397 + ... + 282603807.

It is an arithmetic number, because the mean of its divisors is an integer number (32195031687).

Almost surely, 2^681354873422 is an apocalyptic number.

681354873422 is a deficient number, since it is larger than the sum of its proper divisors (348886140562).

681354873422 is a wasteful number, since it uses less digits than its factorization.

681354873422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724.

The product of its digits is 7741440, while the sum is 53.

The spelling of 681354873422 in words is "six hundred eighty-one billion, three hundred fifty-four million, eight hundred seventy-three thousand, four hundred twenty-two".