85195888061 has 4 divisors (see below), whose sum is σ = 85201082652. Its totient is φ = 85190693472.

The previous prime is 85195888051. The next prime is 85195888079. The reversal of 85195888061 is 16088859158.

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

It can be written as a sum of positive squares in 2 ways, for example, as 80318960836 + 4876927225 = 283406^2 + 69835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85195888061 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 (85195888021) 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 3 ways as a sum of consecutive naturals, for example, 2572616 + ... + 2605521.

It is an arithmetic number, because the mean of its divisors is an integer number (21300270663).

Almost surely, 2^85195888061 is an apocalyptic number.

It is an amenable number.

85195888061 is a deficient number, since it is larger than the sum of its proper divisors (5194591).

85195888061 is a wasteful number, since it uses less digits than its factorization.

85195888061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194590.

The product of its (nonzero) digits is 5529600, while the sum is 59.

The spelling of 85195888061 in words is "eighty-five billion, one hundred ninety-five million, eight hundred eighty-eight thousand, sixty-one".