865081936782 has 96 divisors (see below), whose sum is σ = 2241512574912. Its totient is φ = 235948557312.

The previous prime is 865081936759. The next prime is 865081936813. The reversal of 865081936782 is 287639180568.

865081936782 is a `hidden beast` number, since 8 + 6 + 508 + 19 + 36 + 7 + 82 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1503483 + ... + 1997654.

It is an arithmetic number, because the mean of its divisors is an integer number (23349089322).

Almost surely, 2^865081936782 is an apocalyptic number.

865081936782 is an abundant number, since it is smaller than the sum of its proper divisors (1376430638130).

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

865081936782 is a wasteful number, since it uses less digits than its factorization.

865081936782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501242 (or 3501239 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 865081936782 in words is "eight hundred sixty-five billion, eighty-one million, nine hundred thirty-six thousand, seven hundred eighty-two".