676108453781 has 2 divisors, whose sum is σ = 676108453782. Its totient is φ = 676108453780.

The previous prime is 676108453733. The next prime is 676108453877. The reversal of 676108453781 is 187354801676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 604870174756 + 71238279025 = 777734^2 + 266905^2 .

It is a cyclic number.

It is not a de Polignac number, because 676108453781 - 2¹⁰ = 676108452757 is a prime.

It is a super-2 number, since 2×676108453781² (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 (676105453781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338054226890 + 338054226891.

It is an arithmetic number, because the mean of its divisors is an integer number (338054226891).

Almost surely, 2^676108453781 is an apocalyptic number.

It is an amenable number.

676108453781 is a deficient number, since it is larger than the sum of its proper divisors (1).

676108453781 is an equidigital number, since it uses as much as digits as its factorization.

676108453781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 676108453781 in words is "six hundred seventy-six billion, one hundred eight million, four hundred fifty-three thousand, seven hundred eighty-one".