66446447230313 has 16 divisors (see below), whose sum is σ = 68720140210176. Its totient is φ = 64180912133520.

The previous prime is 66446447230297. The next prime is 66446447230369. The reversal of 66446447230313 is 31303274464466.

It is a cyclic number.

It is not a de Polignac number, because 66446447230313 - 2⁴ = 66446447230297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66446441230313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252918020 + ... + 253180602.

It is an arithmetic number, because the mean of its divisors is an integer number (4295008763136).

Almost surely, 2^{66446447230313} is an apocalyptic number.

It is an amenable number.

66446447230313 is a deficient number, since it is larger than the sum of its proper divisors (2273692979863).

66446447230313 is a wasteful number, since it uses less digits than its factorization.

66446447230313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278084.

The product of its (nonzero) digits is 20901888, while the sum is 53.

The spelling of 66446447230313 in words is "sixty-six trillion, four hundred forty-six billion, four hundred forty-seven million, two hundred thirty thousand, three hundred thirteen".