677855558771 has 2 divisors, whose sum is σ = 677855558772. Its totient is φ = 677855558770.

The previous prime is 677855558741. The next prime is 677855558773. The reversal of 677855558771 is 177855558776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 677855558771 - 2¹⁴ = 677855542387 is a prime.

It is a Sophie Germain prime.

Together with 677855558773, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 677855558695 and 677855558704.

It is not a weakly prime, because it can be changed into another prime (677855558773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338927779385 + 338927779386.

It is an arithmetic number, because the mean of its divisors is an integer number (338927779386).

Almost surely, 2^677855558771 is an apocalyptic number.

677855558771 is a deficient number, since it is larger than the sum of its proper divisors (1).

677855558771 is an equidigital number, since it uses as much as digits as its factorization.

677855558771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576240000, while the sum is 71.

The spelling of 677855558771 in words is "six hundred seventy-seven billion, eight hundred fifty-five million, five hundred fifty-eight thousand, seven hundred seventy-one".