8044539870985 has 16 divisors (see below), whose sum is σ = 10759260758400. Its totient is φ = 5738272402176.

The previous prime is 8044539870959. The next prime is 8044539871037. The reversal of 8044539870985 is 5890789354408.

It is a cyclic number.

It is not a de Polignac number, because 8044539870985 - 2²⁷ = 8044405653257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2490568005 + ... + 2490571234.

It is an arithmetic number, because the mean of its divisors is an integer number (672453797400).

Almost surely, 2^{8044539870985} is an apocalyptic number.

8044539870985 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8044539870985 is a deficient number, since it is larger than the sum of its proper divisors (2714720887415).

8044539870985 is a wasteful number, since it uses less digits than its factorization.

8044539870985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4981139280.

The product of its (nonzero) digits is 348364800, while the sum is 70.

The spelling of 8044539870985 in words is "eight trillion, forty-four billion, five hundred thirty-nine million, eight hundred seventy thousand, nine hundred eighty-five".