681763845411 has 16 divisors (see below), whose sum is σ = 1101840558720. Its totient is φ = 413190209160.

The previous prime is 681763845409. The next prime is 681763845419. The reversal of 681763845411 is 114548367186.

681763845411 is a `hidden beast` number, since 6 + 8 + 17 + 6 + 3 + 84 + 541 + 1 = 666.

It is not a de Polignac number, because 681763845411 - 2¹ = 681763845409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681763845419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147750285 + ... + 1147750878.

It is an arithmetic number, because the mean of its divisors is an integer number (68865034920).

Almost surely, 2^681763845411 is an apocalyptic number.

681763845411 is a deficient number, since it is larger than the sum of its proper divisors (420076713309).

681763845411 is a wasteful number, since it uses less digits than its factorization.

681763845411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295501183 (or 2295501177 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 681763845411 in words is "six hundred eighty-one billion, seven hundred sixty-three million, eight hundred forty-five thousand, four hundred eleven".