85067244109 has 4 divisors (see below), whose sum is σ = 85256703900. Its totient is φ = 84877784320.

The previous prime is 85067244083. The next prime is 85067244133. The reversal of 85067244109 is 90144276058.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24158484900 + 60908759209 = 155430^2 + 246797^2 .

It is a cyclic number.

It is not a de Polignac number, because 85067244109 - 2²⁵ = 85033689677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85067244149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94729222 + ... + 94730119.

It is an arithmetic number, because the mean of its divisors is an integer number (21314175975).

Almost surely, 2^85067244109 is an apocalyptic number.

It is an amenable number.

85067244109 is a deficient number, since it is larger than the sum of its proper divisors (189459791).

85067244109 is a wasteful number, since it uses less digits than its factorization.

85067244109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189459790.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 85067244109 in words is "eighty-five billion, sixty-seven million, two hundred forty-four thousand, one hundred nine".