66675984337 has 2 divisors, whose sum is σ = 66675984338. Its totient is φ = 66675984336.

The previous prime is 66675984313. The next prime is 66675984371. The reversal of 66675984337 is 73348957666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58769395776 + 7906588561 = 242424^2 + 88919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66675984337 is a prime.

It is not a weakly prime, because it can be changed into another prime (66675984737) 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, 33337992168 + 33337992169.

It is an arithmetic number, because the mean of its divisors is an integer number (33337992169).

Almost surely, 2^66675984337 is an apocalyptic number.

It is an amenable number.

66675984337 is a deficient number, since it is larger than the sum of its proper divisors (1).

66675984337 is an equidigital number, since it uses as much as digits as its factorization.

66675984337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137168640, while the sum is 64.

The spelling of 66675984337 in words is "sixty-six billion, six hundred seventy-five million, nine hundred eighty-four thousand, three hundred thirty-seven".