865133834796 has 144 divisors (see below), whose sum is σ = 2784493071360. Its totient is φ = 219928988160.

The previous prime is 865133834791. The next prime is 865133834861. The reversal of 865133834796 is 697438331568.

865133834796 is a `hidden beast` number, since 8 + 6 + 51 + 33 + 83 + 479 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (865133834791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3189901 + ... + 3450468.

It is an arithmetic number, because the mean of its divisors is an integer number (19336757440).

Almost surely, 2^865133834796 is an apocalyptic number.

It is an amenable number.

865133834796 is an abundant number, since it is smaller than the sum of its proper divisors (1919359236564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865133834796 is a wasteful number, since it uses less digits than its factorization.

865133834796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640444 (or 6640439 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 865133834796 in words is "eight hundred sixty-five billion, one hundred thirty-three million, eight hundred thirty-four thousand, seven hundred ninety-six".