85827081187 has 4 divisors (see below), whose sum is σ = 85886151520. Its totient is φ = 85768010856.

The previous prime is 85827081149. The next prime is 85827081209. The reversal of 85827081187 is 78118072858.

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

It is a cyclic number.

It is not a de Polignac number, because 85827081187 - 2¹⁹ = 85826556899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85827081107) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 29532987 + ... + 29535892.

It is an arithmetic number, because the mean of its divisors is an integer number (21471537880).

Almost surely, 2^85827081187 is an apocalyptic number.

85827081187 is a deficient number, since it is larger than the sum of its proper divisors (59070333).

85827081187 is a wasteful number, since it uses less digits than its factorization.

85827081187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59070332.

The product of its (nonzero) digits is 2007040, while the sum is 55.

The spelling of 85827081187 in words is "eighty-five billion, eight hundred twenty-seven million, eighty-one thousand, one hundred eighty-seven".