865734158812 has 48 divisors (see below), whose sum is σ = 1575246708000. Its totient is φ = 415816853760.

The previous prime is 865734158791. The next prime is 865734158843. The reversal of 865734158812 is 218851437568.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117799314 + ... + 117806662.

It is an arithmetic number, because the mean of its divisors is an integer number (32817639750).

Almost surely, 2^865734158812 is an apocalyptic number.

It is an amenable number.

865734158812 is a deficient number, since it is larger than the sum of its proper divisors (709512549188).

865734158812 is a wasteful number, since it uses less digits than its factorization.

865734158812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12406 (or 12404 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 58.

The spelling of 865734158812 in words is "eight hundred sixty-five billion, seven hundred thirty-four million, one hundred fifty-eight thousand, eight hundred twelve".