680898979405533 has 16 divisors (see below), whose sum is σ = 1037561268400640. Its totient is φ = 389084786527536.

The previous prime is 680898979405531. The next prime is 680898979405607. The reversal of 680898979405533 is 335504979898086.

It is not a de Polignac number, because 680898979405533 - 2¹ = 680898979405531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680898979405531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10959678 + ... + 38495616.

It is an arithmetic number, because the mean of its divisors is an integer number (64847579275040).

Almost surely, 2^{680898979405533} is an apocalyptic number.

It is an amenable number.

680898979405533 is a deficient number, since it is larger than the sum of its proper divisors (356662288995107).

680898979405533 is a wasteful number, since it uses less digits than its factorization.

680898979405533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28713456.

The product of its (nonzero) digits is 14108774400, while the sum is 84.

The spelling of 680898979405533 in words is "six hundred eighty trillion, eight hundred ninety-eight billion, nine hundred seventy-nine million, four hundred five thousand, five hundred thirty-three".