66670444403347 has 2 divisors, whose sum is σ = 66670444403348. Its totient is φ = 66670444403346.

The previous prime is 66670444403293. The next prime is 66670444403371. The reversal of 66670444403347 is 74330444407666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66670444403347 - 2²³ = 66670436014739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66670444403291 and 66670444403300.

It is not a weakly prime, because it can be changed into another prime (66670444403047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33335222201673 + 33335222201674.

It is an arithmetic number, because the mean of its divisors is an integer number (33335222201674).

Almost surely, 2^{66670444403347} is an apocalyptic number.

66670444403347 is a deficient number, since it is larger than the sum of its proper divisors (1).

66670444403347 is an equidigital number, since it uses as much as digits as its factorization.

66670444403347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97542144, while the sum is 58.

The spelling of 66670444403347 in words is "sixty-six trillion, six hundred seventy billion, four hundred forty-four million, four hundred three thousand, three hundred forty-seven".