85195342609 has 8 divisors (see below), whose sum is σ = 92041962152. Its totient is φ = 78390599040.

The previous prime is 85195342607. The next prime is 85195342711. The reversal of 85195342609 is 90624359158.

It can be written as a sum of positive squares in 4 ways, for example, as 770229009 + 84425113600 = 27753^2 + 290560^2 .

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

It is not a de Polignac number, because 85195342609 - 2¹ = 85195342607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85195342601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10464762 + ... + 10472899.

It is an arithmetic number, because the mean of its divisors is an integer number (11505245269).

Almost surely, 2^85195342609 is an apocalyptic number.

It is an amenable number.

85195342609 is a deficient number, since it is larger than the sum of its proper divisors (6846619543).

85195342609 is a wasteful number, since it uses less digits than its factorization.

85195342609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20937987.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 85195342609 in words is "eighty-five billion, one hundred ninety-five million, three hundred forty-two thousand, six hundred nine".