65663702369 has 2 divisors, whose sum is σ = 65663702370. Its totient is φ = 65663702368.

The previous prime is 65663702333. The next prime is 65663702381. The reversal of 65663702369 is 96320736656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37736947600 + 27926754769 = 194260^2 + 167113^2 .

It is a cyclic number.

It is not a de Polignac number, because 65663702369 - 2³² = 61368735073 is a prime.

It is a super-2 number, since 2×65663702369² (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 65663702369.

It is not a weakly prime, because it can be changed into another prime (65663702399) 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, 32831851184 + 32831851185.

It is an arithmetic number, because the mean of its divisors is an integer number (32831851185).

Almost surely, 2^65663702369 is an apocalyptic number.

It is an amenable number.

65663702369 is a deficient number, since it is larger than the sum of its proper divisors (1).

65663702369 is an equidigital number, since it uses as much as digits as its factorization.

65663702369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 53.

The spelling of 65663702369 in words is "sixty-five billion, six hundred sixty-three million, seven hundred two thousand, three hundred sixty-nine".