840680108085 has 8 divisors (see below), whose sum is σ = 1345088172960. Its totient is φ = 448362724304.

The previous prime is 840680108077. The next prime is 840680108087. The reversal of 840680108085 is 580801086048.

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 840680108085 - 2³ = 840680108077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840680108087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28022670255 + ... + 28022670284.

It is an arithmetic number, because the mean of its divisors is an integer number (168136021620).

Almost surely, 2^840680108085 is an apocalyptic number.

It is an amenable number.

840680108085 is a deficient number, since it is larger than the sum of its proper divisors (504408064875).

840680108085 is a wasteful number, since it uses less digits than its factorization.

840680108085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56045340547.

The product of its (nonzero) digits is 491520, while the sum is 48.

The spelling of 840680108085 in words is "eight hundred forty billion, six hundred eighty million, one hundred eight thousand, eighty-five".