65212046644469 has 2 divisors, whose sum is σ = 65212046644470. Its totient is φ = 65212046644468.

The previous prime is 65212046644417. The next prime is 65212046644483. The reversal of 65212046644469 is 96444664021256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60895782780625 + 4316263863844 = 7803575^2 + 2077562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65212046644469 is a prime.

It is a super-2 number, since 2×65212046644469² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65212046644489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32606023322234 + 32606023322235.

It is an arithmetic number, because the mean of its divisors is an integer number (32606023322235).

Almost surely, 2^{65212046644469} is an apocalyptic number.

It is an amenable number.

65212046644469 is a deficient number, since it is larger than the sum of its proper divisors (1).

65212046644469 is an equidigital number, since it uses as much as digits as its factorization.

65212046644469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59719680, while the sum is 59.

The spelling of 65212046644469 in words is "sixty-five trillion, two hundred twelve billion, forty-six million, six hundred forty-four thousand, four hundred sixty-nine".