6419965142309 has 2 divisors, whose sum is σ = 6419965142310. Its totient is φ = 6419965142308.

The previous prime is 6419965142293. The next prime is 6419965142329. The reversal of 6419965142309 is 9032415699146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5478890534209 + 941074608100 = 2340703^2 + 970090^2 .

It is a cyclic number.

It is not a de Polignac number, because 6419965142309 - 2⁴ = 6419965142293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6419965142329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3209982571154 + 3209982571155.

It is an arithmetic number, because the mean of its divisors is an integer number (3209982571155).

Almost surely, 2^{6419965142309} is an apocalyptic number.

It is an amenable number.

6419965142309 is a deficient number, since it is larger than the sum of its proper divisors (1).

6419965142309 is an equidigital number, since it uses as much as digits as its factorization.

6419965142309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12597120, while the sum is 59.

The spelling of 6419965142309 in words is "six trillion, four hundred nineteen billion, nine hundred sixty-five million, one hundred forty-two thousand, three hundred nine".