85724295215 has 16 divisors (see below), whose sum is σ = 112598272416. Its totient is φ = 62266320000.

The previous prime is 85724295203. The next prime is 85724295221. The reversal of 85724295215 is 51259242758.

It is not a de Polignac number, because 85724295215 - 2⁴ = 85724295199 is a prime.

It is a Duffinian number.

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, 10806161 + ... + 10814090.

It is an arithmetic number, because the mean of its divisors is an integer number (7037392026).

Almost surely, 2^85724295215 is an apocalyptic number.

85724295215 is a deficient number, since it is larger than the sum of its proper divisors (26873977201).

85724295215 is a wasteful number, since it uses less digits than its factorization.

85724295215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21620330.

The product of its digits is 2016000, while the sum is 50.

The spelling of 85724295215 in words is "eighty-five billion, seven hundred twenty-four million, two hundred ninety-five thousand, two hundred fifteen".