673646800821012 has 108 divisors (see below), whose sum is σ = 1887535297249056. Its totient is φ = 202151469569280.

The previous prime is 673646800821011. The next prime is 673646800821013. The reversal of 673646800821012 is 210128008646376.

It is a happy number.

673646800821012 is a `hidden beast` number, since 6 + 7 + 364 + 68 + 0 + 0 + 8 + 210 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (673646800821011) and next prime (673646800821013).

It is a self number, because there is not a number n which added to its sum of digits gives 673646800821012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673646800821011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1407343914 + ... + 1407822497.

It is an arithmetic number, because the mean of its divisors is an integer number (17477178678232).

Almost surely, 2^{673646800821012} is an apocalyptic number.

It is an amenable number.

673646800821012 is an abundant number, since it is smaller than the sum of its proper divisors (1213888496428044).

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

673646800821012 is a wasteful number, since it uses less digits than its factorization.

673646800821012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815166478 (or 2815166456 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 673646800821012 in words is "six hundred seventy-three trillion, six hundred forty-six billion, eight hundred million, eight hundred twenty-one thousand, twelve".