85686503134 has 4 divisors (see below), whose sum is σ = 128529754704. Its totient is φ = 42843251566.

The previous prime is 85686503117. The next prime is 85686503171. The reversal of 85686503134 is 43130568658.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21421625782 + ... + 21421625785.

It is an arithmetic number, because the mean of its divisors is an integer number (32132438676).

Almost surely, 2^85686503134 is an apocalyptic number.

85686503134 is a deficient number, since it is larger than the sum of its proper divisors (42843251570).

85686503134 is a wasteful number, since it uses less digits than its factorization.

85686503134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42843251569.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 85686503134 in words is "eighty-five billion, six hundred eighty-six million, five hundred three thousand, one hundred thirty-four".