85439653215 has 16 divisors (see below), whose sum is σ = 156232508928. Its totient is φ = 39058127136.

The previous prime is 85439653177. The next prime is 85439653249. The reversal of 85439653215 is 51235693458.

It is not a de Polignac number, because 85439653215 - 2⁹ = 85439652703 is a prime.

It is a congruent number.

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, 406855387 + ... + 406855596.

It is an arithmetic number, because the mean of its divisors is an integer number (9764531808).

Almost surely, 2^85439653215 is an apocalyptic number.

85439653215 is a deficient number, since it is larger than the sum of its proper divisors (70792855713).

85439653215 is a wasteful number, since it uses less digits than its factorization.

85439653215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813710998.

The product of its digits is 3888000, while the sum is 51.

The spelling of 85439653215 in words is "eighty-five billion, four hundred thirty-nine million, six hundred fifty-three thousand, two hundred fifteen".