85608889013 has 4 divisors (see below), whose sum is σ = 85612644300. Its totient is φ = 85605133728.

The previous prime is 85608889001. The next prime is 85608889033. The reversal of 85608889013 is 31098880658.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11672209444 + 73936679569 = 108038^2 + 271913^2 .

It is a cyclic number.

It is not a de Polignac number, because 85608889013 - 2¹⁸ = 85608626869 is a prime.

It is a super-2 number, since 2×85608889013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85608889013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85608889033) 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, 1843238 + ... + 1889111.

It is an arithmetic number, because the mean of its divisors is an integer number (21403161075).

Almost surely, 2^85608889013 is an apocalyptic number.

It is an amenable number.

85608889013 is a deficient number, since it is larger than the sum of its proper divisors (3755287).

85608889013 is a wasteful number, since it uses less digits than its factorization.

85608889013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755286.

The product of its (nonzero) digits is 3317760, while the sum is 56.

The spelling of 85608889013 in words is "eighty-five billion, six hundred eight million, eight hundred eighty-nine thousand, thirteen".