85109071093 has 4 divisors (see below), whose sum is σ = 85366198528. Its totient is φ = 84851943660.

The previous prime is 85109071079. The next prime is 85109071129. The reversal of 85109071093 is 39017090158.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85109071093 - 2¹³ = 85109062901 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 (85109071013) 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, 128563221 + ... + 128563882.

It is an arithmetic number, because the mean of its divisors is an integer number (21341549632).

Almost surely, 2^85109071093 is an apocalyptic number.

It is an amenable number.

85109071093 is a deficient number, since it is larger than the sum of its proper divisors (257127435).

85109071093 is a wasteful number, since it uses less digits than its factorization.

85109071093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257127434.

The product of its (nonzero) digits is 68040, while the sum is 43.

The spelling of 85109071093 in words is "eighty-five billion, one hundred nine million, seventy-one thousand, ninety-three".