85857865715 has 8 divisors (see below), whose sum is σ = 103033729680. Its totient is φ = 68683432032.

The previous prime is 85857865697. The next prime is 85857865729. The reversal of 85857865715 is 51756875858.

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 85857865715 - 2⁶ = 85857865651 is a prime.

It is a super-2 number, since 2×85857865715² (a number of 23 digits) contains 22 as substring.

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, 220745 + ... + 469514.

It is an arithmetic number, because the mean of its divisors is an integer number (12879216210).

Almost surely, 2^85857865715 is an apocalyptic number.

85857865715 is a deficient number, since it is larger than the sum of its proper divisors (17175863965).

85857865715 is a wasteful number, since it uses less digits than its factorization.

85857865715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715141.

The product of its digits is 94080000, while the sum is 65.

The spelling of 85857865715 in words is "eighty-five billion, eight hundred fifty-seven million, eight hundred sixty-five thousand, seven hundred fifteen".