108085851085807 has 4 divisors (see below), whose sum is σ = 123526686955216. Its totient is φ = 92645015216400.

The previous prime is 108085851085783. The next prime is 108085851085811. The reversal of 108085851085807 is 708580158580801.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 108085851085807 - 2¹⁹ = 108085850561519 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 (108085851083807) 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, 7720417934694 + ... + 7720417934707.

It is an arithmetic number, because the mean of its divisors is an integer number (30881671738804).

Almost surely, 2^{108085851085807} is an apocalyptic number.

108085851085807 is a deficient number, since it is larger than the sum of its proper divisors (15440835869409).

108085851085807 is an equidigital number, since it uses as much as digits as its factorization.

108085851085807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15440835869408.

The product of its (nonzero) digits is 28672000, while the sum is 64.

The spelling of 108085851085807 in words is "one hundred eight trillion, eighty-five billion, eight hundred fifty-one million, eighty-five thousand, eight hundred seven".