680385502198 has 4 divisors (see below), whose sum is σ = 1020578253300. Its totient is φ = 340192751098.

The previous prime is 680385502171. The next prime is 680385502201. The reversal of 680385502198 is 891205583086.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 170096375548 + ... + 170096375551.

It is an arithmetic number, because the mean of its divisors is an integer number (255144563325).

Almost surely, 2^680385502198 is an apocalyptic number.

680385502198 is a deficient number, since it is larger than the sum of its proper divisors (340192751102).

680385502198 is a wasteful number, since it uses less digits than its factorization.

680385502198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340192751101.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 680385502198 in words is "six hundred eighty billion, three hundred eighty-five million, five hundred two thousand, one hundred ninety-eight".