65269128257 has 2 divisors, whose sum is σ = 65269128258. Its totient is φ = 65269128256.

The previous prime is 65269128217. The next prime is 65269128277. The reversal of 65269128257 is 75282196256.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52656939841 + 12612188416 = 229471^2 + 112304^2 .

It is a cyclic number.

It is not a de Polignac number, because 65269128257 - 2¹⁶ = 65269062721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65269128199 and 65269128208.

It is not a weakly prime, because it can be changed into another prime (65269128217) 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 as a sum of consecutive naturals, namely, 32634564128 + 32634564129.

It is an arithmetic number, because the mean of its divisors is an integer number (32634564129).

Almost surely, 2^65269128257 is an apocalyptic number.

It is an amenable number.

65269128257 is a deficient number, since it is larger than the sum of its proper divisors (1).

65269128257 is an equidigital number, since it uses as much as digits as its factorization.

65269128257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 53.

The spelling of 65269128257 in words is "sixty-five billion, two hundred sixty-nine million, one hundred twenty-eight thousand, two hundred fifty-seven".