85397759099 has 4 divisors (see below), whose sum is σ = 85435936464. Its totient is φ = 85359581736.

The previous prime is 85397759009. The next prime is 85397759101. The reversal of 85397759099 is 99095779358.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85397759099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85397759009) 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, 19085327 + ... + 19089800.

It is an arithmetic number, because the mean of its divisors is an integer number (21358984116).

Almost surely, 2^85397759099 is an apocalyptic number.

85397759099 is a deficient number, since it is larger than the sum of its proper divisors (38177365).

85397759099 is a wasteful number, since it uses less digits than its factorization.

85397759099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38177364.

The product of its (nonzero) digits is 192893400, while the sum is 71.

The spelling of 85397759099 in words is "eighty-five billion, three hundred ninety-seven million, seven hundred fifty-nine thousand, ninety-nine".