65383977281729 has 8 divisors (see below), whose sum is σ = 66929051148960. Its totient is φ = 63840017789856.

The previous prime is 65383977281723. The next prime is 65383977281731. The reversal of 65383977281729 is 92718277938356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65383977281729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65383977281729.

It is not an unprimeable number, because it can be changed into a prime (65383977281723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278475107 + ... + 278709800.

It is an arithmetic number, because the mean of its divisors is an integer number (8366131393620).

Almost surely, 2^{65383977281729} is an apocalyptic number.

It is an amenable number.

65383977281729 is a deficient number, since it is larger than the sum of its proper divisors (1545073867231).

65383977281729 is a wasteful number, since it uses less digits than its factorization.

65383977281729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557187679.

The product of its digits is 1920360960, while the sum is 77.

The spelling of 65383977281729 in words is "sixty-five trillion, three hundred eighty-three billion, nine hundred seventy-seven million, two hundred eighty-one thousand, seven hundred twenty-nine".