85189665197 has 16 divisors (see below), whose sum is σ = 105392098560. Its totient is φ = 67053560832.

The previous prime is 85189665181. The next prime is 85189665203. The reversal of 85189665197 is 79156698158.

It is a cyclic number.

It is not a de Polignac number, because 85189665197 - 2⁴ = 85189665181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85189665157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2407697 + ... + 2442822.

It is an arithmetic number, because the mean of its divisors is an integer number (6587006160).

Almost surely, 2^85189665197 is an apocalyptic number.

It is an amenable number.

85189665197 is a deficient number, since it is larger than the sum of its proper divisors (20202433363).

85189665197 is a wasteful number, since it uses less digits than its factorization.

85189665197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850732.

The product of its digits is 32659200, while the sum is 65.

The spelling of 85189665197 in words is "eighty-five billion, one hundred eighty-nine million, six hundred sixty-five thousand, one hundred ninety-seven".