85022198891 has 8 divisors (see below), whose sum is σ = 97933332480. Its totient is φ = 72302341608.

The previous prime is 85022198873. The next prime is 85022198893. The reversal of 85022198891 is 19889122058.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-85022198891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85022198893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47818121 + ... + 47819898.

It is an arithmetic number, because the mean of its divisors is an integer number (12241666560).

Almost surely, 2^85022198891 is an apocalyptic number.

85022198891 is a deficient number, since it is larger than the sum of its proper divisors (12911133589).

85022198891 is a wasteful number, since it uses less digits than its factorization.

85022198891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95638153.

The product of its (nonzero) digits is 829440, while the sum is 53.

The spelling of 85022198891 in words is "eighty-five billion, twenty-two million, one hundred ninety-eight thousand, eight hundred ninety-one".