680682191915 has 16 divisors (see below), whose sum is σ = 891314737920. Its totient is φ = 494908333920.

The previous prime is 680682191911. The next prime is 680682191933. The reversal of 680682191915 is 519191286086.

It is not a de Polignac number, because 680682191915 - 2² = 680682191911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680682191911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459349 + ... + 1868438.

It is an arithmetic number, because the mean of its divisors is an integer number (55707171120).

Almost surely, 2^680682191915 is an apocalyptic number.

680682191915 is a deficient number, since it is larger than the sum of its proper divisors (210632546005).

680682191915 is a wasteful number, since it uses less digits than its factorization.

680682191915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331522.

The product of its (nonzero) digits is 1866240, while the sum is 56.

The spelling of 680682191915 in words is "six hundred eighty billion, six hundred eighty-two million, one hundred ninety-one thousand, nine hundred fifteen".