680265558018 has 48 divisors (see below), whose sum is σ = 1565212877280. Its totient is φ = 212919622272.

The previous prime is 680265557963. The next prime is 680265558041. The reversal of 680265558018 is 810855562086.

680265558018 is a `hidden beast` number, since 6 + 8 + 0 + 2 + 6 + 55 + 580 + 1 + 8 = 666.

It is a super-2 number, since 2×680265558018² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8762596 + ... + 8839887.

It is an arithmetic number, because the mean of its divisors is an integer number (32608601610).

Almost surely, 2^680265558018 is an apocalyptic number.

680265558018 is an abundant number, since it is smaller than the sum of its proper divisors (884947319262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680265558018 is a wasteful number, since it uses less digits than its factorization.

680265558018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17602623 (or 17602620 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 54.

The spelling of 680265558018 in words is "six hundred eighty billion, two hundred sixty-five million, five hundred fifty-eight thousand, eighteen".