865144357230 has 16 divisors (see below), whose sum is σ = 2076346457424. Its totient is φ = 230705161920.

The previous prime is 865144357229. The next prime is 865144357277. The reversal of 865144357230 is 32753441568.

It is a self number, because there is not a number n which added to its sum of digits gives 865144357230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14419072591 + ... + 14419072650.

It is an arithmetic number, because the mean of its divisors is an integer number (129771653589).

Almost surely, 2^865144357230 is an apocalyptic number.

865144357230 is an abundant number, since it is smaller than the sum of its proper divisors (1211202100194).

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

865144357230 is a wasteful number, since it uses less digits than its factorization.

865144357230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28838145251.

The product of its (nonzero) digits is 2419200, while the sum is 48.

Adding to 865144357230 its reverse (32753441568), we get a palindrome (897897798798).

The spelling of 865144357230 in words is "eight hundred sixty-five billion, one hundred forty-four million, three hundred fifty-seven thousand, two hundred thirty".