85106046691 has 4 divisors (see below), whose sum is σ = 85117074232. Its totient is φ = 85095019152.

The previous prime is 85106046659. The next prime is 85106046703. The reversal of 85106046691 is 19664060158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19664060158 = 2 ⋅9832030079.

It is a cyclic number.

It is not a de Polignac number, because 85106046691 - 2⁵ = 85106046659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85106046611) 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, 5502186 + ... + 5517631.

It is an arithmetic number, because the mean of its divisors is an integer number (21279268558).

Almost surely, 2^85106046691 is an apocalyptic number.

85106046691 is a deficient number, since it is larger than the sum of its proper divisors (11027541).

85106046691 is a wasteful number, since it uses less digits than its factorization.

85106046691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11027540.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 85106046691 in words is "eighty-five billion, one hundred six million, forty-six thousand, six hundred ninety-one".