85646032811 has 4 divisors (see below), whose sum is σ = 89369773392. Its totient is φ = 81922292232.

The previous prime is 85646032777. The next prime is 85646032819. The reversal of 85646032811 is 11823064658.

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 85646032811 - 2¹⁰ = 85646031787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85646032819) 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, 1861870256 + ... + 1861870301.

It is an arithmetic number, because the mean of its divisors is an integer number (22342443348).

Almost surely, 2^85646032811 is an apocalyptic number.

85646032811 is a deficient number, since it is larger than the sum of its proper divisors (3723740581).

85646032811 is a wasteful number, since it uses less digits than its factorization.

85646032811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723740580.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 85646032811 in words is "eighty-five billion, six hundred forty-six million, thirty-two thousand, eight hundred eleven".