680987143578 has 16 divisors (see below), whose sum is σ = 1556542042560. Its totient is φ = 194567755296.

The previous prime is 680987143553. The next prime is 680987143579. The reversal of 680987143578 is 875341789086.

It is not an unprimeable number, because it can be changed into a prime (680987143579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8106989763 + ... + 8106989846.

It is an arithmetic number, because the mean of its divisors is an integer number (97283877660).

Almost surely, 2^680987143578 is an apocalyptic number.

680987143578 is an abundant number, since it is smaller than the sum of its proper divisors (875554898982).

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

680987143578 is a wasteful number, since it uses less digits than its factorization.

680987143578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16213979621.

The product of its (nonzero) digits is 81285120, while the sum is 66.

The spelling of 680987143578 in words is "six hundred eighty billion, nine hundred eighty-seven million, one hundred forty-three thousand, five hundred seventy-eight".