85512541886 has 4 divisors (see below), whose sum is σ = 128268812832. Its totient is φ = 42756270942.

The previous prime is 85512541867. The next prime is 85512541901. The reversal of 85512541886 is 68814521558.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21378135470 + ... + 21378135473.

It is an arithmetic number, because the mean of its divisors is an integer number (32067203208).

Almost surely, 2^85512541886 is an apocalyptic number.

85512541886 is a deficient number, since it is larger than the sum of its proper divisors (42756270946).

85512541886 is a wasteful number, since it uses less digits than its factorization.

85512541886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42756270945.

The product of its digits is 3072000, while the sum is 53.

The spelling of 85512541886 in words is "eighty-five billion, five hundred twelve million, five hundred forty-one thousand, eight hundred eighty-six".