65864155368 has 32 divisors (see below), whose sum is σ = 179629515360. Its totient is φ = 19958834880.

The previous prime is 65864155361. The next prime is 65864155373. The reversal of 65864155368 is 86355146856.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65864155361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124742455 + ... + 124742982.

It is an arithmetic number, because the mean of its divisors is an integer number (5613422355).

Almost surely, 2^65864155368 is an apocalyptic number.

It is an amenable number.

65864155368 is an abundant number, since it is smaller than the sum of its proper divisors (113765359992).

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

65864155368 is a wasteful number, since it uses less digits than its factorization.

65864155368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249485457 (or 249485453 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 57.

The spelling of 65864155368 in words is "sixty-five billion, eight hundred sixty-four million, one hundred fifty-five thousand, three hundred sixty-eight".