680661165158 has 16 divisors (see below), whose sum is σ = 1110864935040. Its totient is φ = 310912632576.

The previous prime is 680661165137. The next prime is 680661165161. The reversal of 680661165158 is 851561166086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134942198 + ... + 134947241.

It is an arithmetic number, because the mean of its divisors is an integer number (69429058440).

Almost surely, 2^680661165158 is an apocalyptic number.

680661165158 is a deficient number, since it is larger than the sum of its proper divisors (430203769882).

680661165158 is a wasteful number, since it uses less digits than its factorization.

680661165158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269889551.

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 680661165158 in words is "six hundred eighty billion, six hundred sixty-one million, one hundred sixty-five thousand, one hundred fifty-eight".