65657388389334 has 64 divisors (see below), whose sum is σ = 150248932110336. Its totient is φ = 18737393757984.

The previous prime is 65657388389309. The next prime is 65657388389381. The reversal of 65657388389334 is 43398388375656.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65657388389334.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738483927 + ... + 738572829.

It is an arithmetic number, because the mean of its divisors is an integer number (2347639564224).

Almost surely, 2^{65657388389334} is an apocalyptic number.

65657388389334 is an abundant number, since it is smaller than the sum of its proper divisors (84591543721002).

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

65657388389334 is a wasteful number, since it uses less digits than its factorization.

65657388389334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109209.

The product of its digits is 9405849600, while the sum is 78.

The spelling of 65657388389334 in words is "sixty-five trillion, six hundred fifty-seven billion, three hundred eighty-eight million, three hundred eighty-nine thousand, three hundred thirty-four".