85005807789 has 16 divisors (see below), whose sum is σ = 129757171328. Its totient is φ = 48490555392.

The previous prime is 85005807713. The next prime is 85005807811. The reversal of 85005807789 is 98770850058.

It is not a de Polignac number, because 85005807789 - 2¹² = 85005803693 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 (85005807589) 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, 3495592 + ... + 3519825.

It is an arithmetic number, because the mean of its divisors is an integer number (8109823208).

Almost surely, 2^85005807789 is an apocalyptic number.

It is an amenable number.

85005807789 is a deficient number, since it is larger than the sum of its proper divisors (44751363539).

85005807789 is a wasteful number, since it uses less digits than its factorization.

85005807789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7016004.

The product of its (nonzero) digits is 5644800, while the sum is 57.

The spelling of 85005807789 in words is "eighty-five billion, five million, eight hundred seven thousand, seven hundred eighty-nine".