85801578715 has 8 divisors (see below), whose sum is σ = 103009159440. Its totient is φ = 68609752992.

The previous prime is 85801578661. The next prime is 85801578827. The reversal of 85801578715 is 51787510858.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85801578715 is a prime.

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, 3926764 + ... + 3948553.

It is an arithmetic number, because the mean of its divisors is an integer number (12876144930).

Almost surely, 2^85801578715 is an apocalyptic number.

85801578715 is a deficient number, since it is larger than the sum of its proper divisors (17207580725).

85801578715 is a wasteful number, since it uses less digits than its factorization.

85801578715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7877501.

The product of its (nonzero) digits is 3136000, while the sum is 55.

The spelling of 85801578715 in words is "eighty-five billion, eight hundred one million, five hundred seventy-eight thousand, seven hundred fifteen".