85856605311 has 4 divisors (see below), whose sum is σ = 114475473752. Its totient is φ = 57237736872.

The previous prime is 85856605291. The next prime is 85856605321. The reversal of 85856605311 is 11350665858.

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

It is not a de Polignac number, because 85856605311 - 2¹⁰ = 85856604287 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 (85856605321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14309434216 + ... + 14309434221.

It is an arithmetic number, because the mean of its divisors is an integer number (28618868438).

Almost surely, 2^85856605311 is an apocalyptic number.

85856605311 is a deficient number, since it is larger than the sum of its proper divisors (28618868441).

85856605311 is a wasteful number, since it uses less digits than its factorization.

85856605311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28618868440.

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 85856605311 in words is "eighty-five billion, eight hundred fifty-six million, six hundred five thousand, three hundred eleven".