681333400148 has 12 divisors (see below), whose sum is σ = 1196733206592. Its totient is φ = 339409626840.

The previous prime is 681333400127. The next prime is 681333400157. The reversal of 681333400148 is 841004333186.

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 3 ways as a sum of consecutive naturals, for example, 314267090 + ... + 314269257.

It is an arithmetic number, because the mean of its divisors is an integer number (99727767216).

Almost surely, 2^681333400148 is an apocalyptic number.

It is an amenable number.

681333400148 is a deficient number, since it is larger than the sum of its proper divisors (515399806444).

681333400148 is a wasteful number, since it uses less digits than its factorization.

681333400148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628536622 (or 628536620 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 681333400148 in words is "six hundred eighty-one billion, three hundred thirty-three million, four hundred thousand, one hundred forty-eight".