680809708801 has 4 divisors (see below), whose sum is σ = 681286134100. Its totient is φ = 680333283504.

The previous prime is 680809708771. The next prime is 680809708819. The reversal of 680809708801 is 108807908086.

680809708801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 108807908086 = 2 ⋅54403954043.

It can be written as a sum of positive squares in 2 ways, for example, as 377124951025 + 303684757776 = 614105^2 + 551076^2 .

It is a cyclic number.

It is not a de Polignac number, because 680809708801 - 2²⁵ = 680776154369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680809702801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238210506 + ... + 238213363.

It is an arithmetic number, because the mean of its divisors is an integer number (170321533525).

Almost surely, 2^680809708801 is an apocalyptic number.

It is an amenable number.

680809708801 is a deficient number, since it is larger than the sum of its proper divisors (476425299).

680809708801 is a wasteful number, since it uses less digits than its factorization.

680809708801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476425298.

The product of its (nonzero) digits is 1548288, while the sum is 55.

The spelling of 680809708801 in words is "six hundred eighty billion, eight hundred nine million, seven hundred eight thousand, eight hundred one".