680380116977 has 4 divisors (see below), whose sum is σ = 742232854896. Its totient is φ = 618527379060.

The previous prime is 680380116943. The next prime is 680380116989. The reversal of 680380116977 is 779611083086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 680380116977 - 2²² = 680375922673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680380112977) 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 in 3 ways as a sum of consecutive naturals, for example, 30926368943 + ... + 30926368964.

It is an arithmetic number, because the mean of its divisors is an integer number (185558213724).

Almost surely, 2^680380116977 is an apocalyptic number.

It is an amenable number.

680380116977 is a deficient number, since it is larger than the sum of its proper divisors (61852737919).

680380116977 is a wasteful number, since it uses less digits than its factorization.

680380116977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61852737918.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 680380116977 in words is "six hundred eighty billion, three hundred eighty million, one hundred sixteen thousand, nine hundred seventy-seven".