65889605269 has 2 divisors, whose sum is σ = 65889605270. Its totient is φ = 65889605268.

The previous prime is 65889605251. The next prime is 65889605303. The reversal of 65889605269 is 96250698856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45150725169 + 20738880100 = 212487^2 + 144010^2 .

It is a cyclic number.

It is not a de Polignac number, because 65889605269 - 2⁹ = 65889604757 is a prime.

It is a super-2 number, since 2×65889605269² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65889605269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65889605209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32944802634 + 32944802635.

It is an arithmetic number, because the mean of its divisors is an integer number (32944802635).

Almost surely, 2^65889605269 is an apocalyptic number.

It is an amenable number.

65889605269 is a deficient number, since it is larger than the sum of its proper divisors (1).

65889605269 is an equidigital number, since it uses as much as digits as its factorization.

65889605269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55987200, while the sum is 64.

The spelling of 65889605269 in words is "sixty-five billion, eight hundred eighty-nine million, six hundred five thousand, two hundred sixty-nine".