85195842079 has 4 divisors (see below), whose sum is σ = 87177140776. Its totient is φ = 83214543384.

The previous prime is 85195842073. The next prime is 85195842113. The reversal of 85195842079 is 97024859158.

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

It is a cyclic number.

It is not a de Polignac number, because 85195842079 - 2⁹ = 85195841567 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 (85195842073) 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, 990649284 + ... + 990649369.

It is an arithmetic number, because the mean of its divisors is an integer number (21794285194).

Almost surely, 2^85195842079 is an apocalyptic number.

85195842079 is a deficient number, since it is larger than the sum of its proper divisors (1981298697).

85195842079 is a wasteful number, since it uses less digits than its factorization.

85195842079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981298696.

The product of its (nonzero) digits is 7257600, while the sum is 58.

The spelling of 85195842079 in words is "eighty-five billion, one hundred ninety-five million, eight hundred forty-two thousand, seventy-nine".