677120664991 has 2 divisors, whose sum is σ = 677120664992. Its totient is φ = 677120664990.

The previous prime is 677120664977. The next prime is 677120665043. The reversal of 677120664991 is 199466021776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 677120664991 - 2²⁹ = 676583794079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677120664911) 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 as a sum of consecutive naturals, namely, 338560332495 + 338560332496.

It is an arithmetic number, because the mean of its divisors is an integer number (338560332496).

Almost surely, 2^677120664991 is an apocalyptic number.

677120664991 is a deficient number, since it is larger than the sum of its proper divisors (1).

677120664991 is an equidigital number, since it uses as much as digits as its factorization.

677120664991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 677120664991 in words is "six hundred seventy-seven billion, one hundred twenty million, six hundred sixty-four thousand, nine hundred ninety-one".