680202166305 has 32 divisors (see below), whose sum is σ = 1089568972800. Its totient is φ = 362359535040.

The previous prime is 680202166297. The next prime is 680202166331. The reversal of 680202166305 is 503661202086.

It is not a de Polignac number, because 680202166305 - 2³ = 680202166297 is a prime.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 99689124 + ... + 99695946.

It is an arithmetic number, because the mean of its divisors is an integer number (34049030400).

Almost surely, 2^680202166305 is an apocalyptic number.

It is an amenable number.

680202166305 is a deficient number, since it is larger than the sum of its proper divisors (409366806495).

680202166305 is a wasteful number, since it uses less digits than its factorization.

680202166305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13461.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 680202166305 in words is "six hundred eighty billion, two hundred two million, one hundred sixty-six thousand, three hundred five".