66364424444705 has 4 divisors (see below), whose sum is σ = 79637309333652. Its totient is φ = 53091539555760.

The previous prime is 66364424444677. The next prime is 66364424444771. The reversal of 66364424444705 is 50744442446366.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52832444199649 + 13531980245056 = 7268593^2 + 3678584^2 .

It is not a de Polignac number, because 66364424444705 - 2²⁴ = 66364407667489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6636442444466 + ... + 6636442444475.

It is an arithmetic number, because the mean of its divisors is an integer number (19909327333413).

Almost surely, 2^{66364424444705} is an apocalyptic number.

It is an amenable number.

66364424444705 is a deficient number, since it is larger than the sum of its proper divisors (13272884888947).

66364424444705 is a wasteful number, since it uses less digits than its factorization.

66364424444705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13272884888946.

The product of its (nonzero) digits is 185794560, while the sum is 59.

The spelling of 66364424444705 in words is "sixty-six trillion, three hundred sixty-four billion, four hundred twenty-four million, four hundred forty-four thousand, seven hundred five".