85668417694 has 4 divisors (see below), whose sum is σ = 128502626544. Its totient is φ = 42834208846.

The previous prime is 85668417683. The next prime is 85668417707. The reversal of 85668417694 is 49671486658.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 21417104422 + ... + 21417104425.

It is an arithmetic number, because the mean of its divisors is an integer number (32125656636).

Almost surely, 2^85668417694 is an apocalyptic number.

85668417694 is a deficient number, since it is larger than the sum of its proper divisors (42834208850).

85668417694 is a wasteful number, since it uses less digits than its factorization.

85668417694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42834208849.

The product of its digits is 69672960, while the sum is 64.

The spelling of 85668417694 in words is "eighty-five billion, six hundred sixty-eight million, four hundred seventeen thousand, six hundred ninety-four".