865124785116 has 96 divisors (see below), whose sum is σ = 2344332480000. Its totient is φ = 275377449600.

The previous prime is 865124784989. The next prime is 865124785117. The reversal of 865124785116 is 611587421568.

865124785116 is a `hidden beast` number, since 8 + 6 + 51 + 2 + 4 + 78 + 511 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865124785117) 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 31 ways as a sum of consecutive naturals, for example, 1203135 + ... + 1782633.

It is an arithmetic number, because the mean of its divisors is an integer number (24420130000).

Almost surely, 2^865124785116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 865124785116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1172166240000).

865124785116 is an abundant number, since it is smaller than the sum of its proper divisors (1479207694884).

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

865124785116 is a wasteful number, since it uses less digits than its factorization.

865124785116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580136 (or 580128 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 865124785116 in words is "eight hundred sixty-five billion, one hundred twenty-four million, seven hundred eighty-five thousand, one hundred sixteen".