65338005769 has 3 divisors (see below), whose sum is σ = 65338261383. Its totient is φ = 65337750156.

The previous prime is 65338005763. The next prime is 65338005779. The reversal of 65338005769 is 96750083356.

The square root of 65338005769 is 255613.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 511225 + 65337494544 = 715^2 + 255612^2 .

It is not a de Polignac number, because 65338005769 - 2⁷ = 65338005641 is a prime.

It is a super-2 number, since 2×65338005769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65338005763) 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 2 ways as a sum of consecutive naturals, for example, 127807 + ... + 383419.

It is an arithmetic number, because the mean of its divisors is an integer number (21779420461).

Almost surely, 2^65338005769 is an apocalyptic number.

65338005769 is the 255613-rd square number.

65338005769 is the 127807-th centered octagonal number.

It is an amenable number.

65338005769 is a deficient number, since it is larger than the sum of its proper divisors (255614).

65338005769 is an frugal number, since it uses more digits than its factorization.

65338005769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511226 (or 255613 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 52.

The spelling of 65338005769 in words is "sixty-five billion, three hundred thirty-eight million, five thousand, seven hundred sixty-nine".