65684450459 has 2 divisors, whose sum is σ = 65684450460. Its totient is φ = 65684450458.

The previous prime is 65684450411. The next prime is 65684450477. The reversal of 65684450459 is 95405448656.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65684450459 is a prime.

It is not a weakly prime, because it can be changed into another prime (65684450659) 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, 32842225229 + 32842225230.

It is an arithmetic number, because the mean of its divisors is an integer number (32842225230).

Almost surely, 2^65684450459 is an apocalyptic number.

65684450459 is a deficient number, since it is larger than the sum of its proper divisors (1).

65684450459 is an equidigital number, since it uses as much as digits as its factorization.

65684450459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736000, while the sum is 56.

The spelling of 65684450459 in words is "sixty-five billion, six hundred eighty-four million, four hundred fifty thousand, four hundred fifty-nine".