681407403028 has 12 divisors (see below), whose sum is σ = 1300868678592. Its totient is φ = 309730637720.

The previous prime is 681407402983. The next prime is 681407403071. The reversal of 681407403028 is 820304704186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7743265900 + ... + 7743265987.

It is an arithmetic number, because the mean of its divisors is an integer number (108405723216).

Almost surely, 2^681407403028 is an apocalyptic number.

It is an amenable number.

681407403028 is a deficient number, since it is larger than the sum of its proper divisors (619461275564).

681407403028 is a wasteful number, since it uses less digits than its factorization.

681407403028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15486531902 (or 15486531900 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 681407403028 in words is "six hundred eighty-one billion, four hundred seven million, four hundred three thousand, twenty-eight".