65838621381276 has 12 divisors (see below), whose sum is σ = 153623449889672. Its totient is φ = 21946207127088.

The previous prime is 65838621381259. The next prime is 65838621381311. The reversal of 65838621381276 is 67218312683856.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2743275890875 + ... + 2743275890898.

Almost surely, 2^{65838621381276} is an apocalyptic number.

It is an amenable number.

65838621381276 is an abundant number, since it is smaller than the sum of its proper divisors (87784828508396).

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

65838621381276 is a wasteful number, since it uses less digits than its factorization.

65838621381276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5486551781780 (or 5486551781778 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 66.

The spelling of 65838621381276 in words is "sixty-five trillion, eight hundred thirty-eight billion, six hundred twenty-one million, three hundred eighty-one thousand, two hundred seventy-six".