85405885211 has 16 divisors (see below), whose sum is σ = 93415956480. Its totient is φ = 77846556480.

The previous prime is 85405885199. The next prime is 85405885237. The reversal of 85405885211 is 11258850458.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85405885211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85405885291) 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 15 ways as a sum of consecutive naturals, for example, 1012571 + ... + 1093668.

It is an arithmetic number, because the mean of its divisors is an integer number (5838497280).

Almost surely, 2^85405885211 is an apocalyptic number.

85405885211 is a deficient number, since it is larger than the sum of its proper divisors (8010071269).

85405885211 is a wasteful number, since it uses less digits than its factorization.

85405885211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106346.

The product of its (nonzero) digits is 512000, while the sum is 47.

The spelling of 85405885211 in words is "eighty-five billion, four hundred five million, eight hundred eighty-five thousand, two hundred eleven".