8255809163693 has 24 divisors (see below), whose sum is σ = 10222202774016. Its totient is φ = 6528630888000.

The previous prime is 8255809163647. The next prime is 8255809163711. The reversal of 8255809163693 is 3963619085528.

It is not a de Polignac number, because 8255809163693 - 2¹⁰ = 8255809162669 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 (8255809763693) 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 23 ways as a sum of consecutive naturals, for example, 413348 + ... + 4084418.

It is an arithmetic number, because the mean of its divisors is an integer number (425925115584).

Almost surely, 2^{8255809163693} is an apocalyptic number.

It is an amenable number.

8255809163693 is a deficient number, since it is larger than the sum of its proper divisors (1966393610323).

8255809163693 is a wasteful number, since it uses less digits than its factorization.

8255809163693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673005 (or 3672992 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 65.

The spelling of 8255809163693 in words is "eight trillion, two hundred fifty-five billion, eight hundred nine million, one hundred sixty-three thousand, six hundred ninety-three".