108680637805 has 8 divisors (see below), whose sum is σ = 130833434232. Its totient is φ = 86666731008.

The previous prime is 108680637803. The next prime is 108680637817. The reversal of 108680637805 is 508736086801.

It can be written as a sum of positive squares in 4 ways, for example, as 306916 + 108680330889 = 554^2 + 329667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 108680637805 - 2¹ = 108680637803 is a prime.

It is a super-2 number, since 2×108680637805² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108680637803) 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, 34720684 + ... + 34723813.

It is an arithmetic number, because the mean of its divisors is an integer number (16354179279).

Almost surely, 2^108680637805 is an apocalyptic number.

It is an amenable number.

108680637805 is a deficient number, since it is larger than the sum of its proper divisors (22152796427).

108680637805 is an equidigital number, since it uses as much as digits as its factorization.

108680637805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69444815.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 108680637805 in words is "one hundred eight billion, six hundred eighty million, six hundred thirty-seven thousand, eight hundred five".