66444444463 has 2 divisors, whose sum is σ = 66444444464. Its totient is φ = 66444444462.

The previous prime is 66444444457. The next prime is 66444444541. The reversal of 66444444463 is 36444444466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66444444463 - 2¹³ = 66444436271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66444444403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33222222231 + 33222222232.

It is an arithmetic number, because the mean of its divisors is an integer number (33222222232).

Almost surely, 2^66444444463 is an apocalyptic number.

66444444463 is a deficient number, since it is larger than the sum of its proper divisors (1).

66444444463 is an equidigital number, since it uses as much as digits as its factorization.

66444444463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10616832, while the sum is 49.

The spelling of 66444444463 in words is "sixty-six billion, four hundred forty-four million, four hundred forty-four thousand, four hundred sixty-three".