673821768756 has 48 divisors (see below), whose sum is σ = 1623850550784. Its totient is φ = 217333497696.

The previous prime is 673821768751. The next prime is 673821768769. The reversal of 673821768756 is 657867128376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673821768751) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6046920 + ... + 6157343.

It is an arithmetic number, because the mean of its divisors is an integer number (33830219808).

Almost surely, 2^673821768756 is an apocalyptic number.

It is an amenable number.

673821768756 is an abundant number, since it is smaller than the sum of its proper divisors (950028782028).

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

673821768756 is a wasteful number, since it uses less digits than its factorization.

673821768756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12204420 (or 12204418 counting only the distinct ones).

The product of its digits is 142248960, while the sum is 66.

The spelling of 673821768756 in words is "six hundred seventy-three billion, eight hundred twenty-one million, seven hundred sixty-eight thousand, seven hundred fifty-six".