85799747788 has 24 divisors (see below), whose sum is σ = 150368736672. Its totient is φ = 42837293184.

The previous prime is 85799747773. The next prime is 85799747809. The reversal of 85799747788 is 88774799758.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17376456 + ... + 17381392.

It is an arithmetic number, because the mean of its divisors is an integer number (6265364028).

Almost surely, 2^85799747788 is an apocalyptic number.

It is an amenable number.

85799747788 is a deficient number, since it is larger than the sum of its proper divisors (64568988884).

85799747788 is a wasteful number, since it uses less digits than its factorization.

85799747788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10401 (or 10399 counting only the distinct ones).

The product of its digits is 1991485440, while the sum is 79.

The spelling of 85799747788 in words is "eighty-five billion, seven hundred ninety-nine million, seven hundred forty-seven thousand, seven hundred eighty-eight".