673136887837 has 2 divisors, whose sum is σ = 673136887838. Its totient is φ = 673136887836.

The previous prime is 673136887831. The next prime is 673136887877. The reversal of 673136887837 is 738788631376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515278473241 + 157858414596 = 717829^2 + 397314^2 .

It is a cyclic number.

It is not a de Polignac number, because 673136887837 - 2¹¹ = 673136885789 is a prime.

It is a super-2 number, since 2×673136887837² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673136887831) 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 as a sum of consecutive naturals, namely, 336568443918 + 336568443919.

It is an arithmetic number, because the mean of its divisors is an integer number (336568443919).

Almost surely, 2^673136887837 is an apocalyptic number.

It is an amenable number.

673136887837 is a deficient number, since it is larger than the sum of its proper divisors (1).

673136887837 is an equidigital number, since it uses as much as digits as its factorization.

673136887837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170698752, while the sum is 67.

The spelling of 673136887837 in words is "six hundred seventy-three billion, one hundred thirty-six million, eight hundred eighty-seven thousand, eight hundred thirty-seven".