673944331113 has 12 divisors (see below), whose sum is σ = 973484116020. Its totient is φ = 449292080256.

The previous prime is 673944331079. The next prime is 673944331121. The reversal of 673944331113 is 311133449376.

673944331113 is a `hidden beast` number, since 67 + 3 + 9 + 443 + 31 + 113 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 410993823744 + 262950507369 = 641088^2 + 512787^2 .

It is not a de Polignac number, because 673944331113 - 2³⁰ = 672870589289 is a prime.

It is a super-2 number, since 2×673944331113² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (673944331153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 936253 + ... + 1491461.

It is an arithmetic number, because the mean of its divisors is an integer number (81123676335).

Almost surely, 2^673944331113 is an apocalyptic number.

It is an amenable number.

673944331113 is a deficient number, since it is larger than the sum of its proper divisors (299539784907).

673944331113 is a wasteful number, since it uses less digits than its factorization.

673944331113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690088 (or 690085 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The spelling of 673944331113 in words is "six hundred seventy-three billion, nine hundred forty-four million, three hundred thirty-one thousand, one hundred thirteen".