66614544220463 has 2 divisors, whose sum is σ = 66614544220464. Its totient is φ = 66614544220462.

The previous prime is 66614544220423. The next prime is 66614544220481. The reversal of 66614544220463 is 36402244541666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66614544220463 - 2²⁶ = 66614477111599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66614544220423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33307272110231 + 33307272110232.

It is an arithmetic number, because the mean of its divisors is an integer number (33307272110232).

Almost surely, 2^{66614544220463} is an apocalyptic number.

66614544220463 is a deficient number, since it is larger than the sum of its proper divisors (1).

66614544220463 is an equidigital number, since it uses as much as digits as its factorization.

66614544220463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19906560, while the sum is 53.

The spelling of 66614544220463 in words is "sixty-six trillion, six hundred fourteen billion, five hundred forty-four million, two hundred twenty thousand, four hundred sixty-three".