85722857215 has 8 divisors (see below), whose sum is σ = 102978163440. Its totient is φ = 68504462592.

The previous prime is 85722857189. The next prime is 85722857237. The reversal of 85722857215 is 51275822758.

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 85722857215 - 2⁵ = 85722857183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9222789 + ... + 9232078.

It is an arithmetic number, because the mean of its divisors is an integer number (12872270430).

Almost surely, 2^85722857215 is an apocalyptic number.

85722857215 is a deficient number, since it is larger than the sum of its proper divisors (17255306225).

85722857215 is a wasteful number, since it uses less digits than its factorization.

85722857215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18455801.

The product of its digits is 3136000, while the sum is 52.

The spelling of 85722857215 in words is "eighty-five billion, seven hundred twenty-two million, eight hundred fifty-seven thousand, two hundred fifteen".