677708118551 has 4 divisors (see below), whose sum is σ = 679661168232. Its totient is φ = 675755068872.

The previous prime is 677708118539. The next prime is 677708118553. The reversal of 677708118551 is 155811807776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 677708118551 - 2³⁸ = 402830211607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677708118553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976524320 + ... + 976525013.

It is an arithmetic number, because the mean of its divisors is an integer number (169915292058).

Almost surely, 2^677708118551 is an apocalyptic number.

677708118551 is a deficient number, since it is larger than the sum of its proper divisors (1953049681).

677708118551 is a wasteful number, since it uses less digits than its factorization.

677708118551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953049680.

The product of its (nonzero) digits is 3292800, while the sum is 56.

The spelling of 677708118551 in words is "six hundred seventy-seven billion, seven hundred eight million, one hundred eighteen thousand, five hundred fifty-one".