680131628803 has 4 divisors (see below), whose sum is σ = 741961776888. Its totient is φ = 618301480720.

The previous prime is 680131628797. The next prime is 680131628819. The reversal of 680131628803 is 308826131086.

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

It is not a de Polignac number, because 680131628803 - 2²¹ = 680129531651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680131628843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30915074026 + ... + 30915074047.

It is an arithmetic number, because the mean of its divisors is an integer number (185490444222).

Almost surely, 2^680131628803 is an apocalyptic number.

680131628803 is a deficient number, since it is larger than the sum of its proper divisors (61830148085).

680131628803 is a wasteful number, since it uses less digits than its factorization.

680131628803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61830148084.

The product of its (nonzero) digits is 331776, while the sum is 46.

Adding to 680131628803 its reverse (308826131086), we get a palindrome (988957759889).

The spelling of 680131628803 in words is "six hundred eighty billion, one hundred thirty-one million, six hundred twenty-eight thousand, eight hundred three".