85865143015 has 8 divisors (see below), whose sum is σ = 103297716000. Its totient is φ = 68519084832.

The previous prime is 85865143009. The next prime is 85865143027. The reversal of 85865143015 is 51034156858.

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 85865143015 - 2⁵ = 85865142983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21626515 + ... + 21630484.

It is an arithmetic number, because the mean of its divisors is an integer number (12912214500).

Almost surely, 2^85865143015 is an apocalyptic number.

85865143015 is a deficient number, since it is larger than the sum of its proper divisors (17432572985).

85865143015 is a wasteful number, since it uses less digits than its factorization.

85865143015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43257401.

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 85865143015 in words is "eighty-five billion, eight hundred sixty-five million, one hundred forty-three thousand, fifteen".