1664200175327 has 2 divisors, whose sum is σ = 1664200175328. Its totient is φ = 1664200175326.

The previous prime is 1664200175299. The next prime is 1664200175357. The reversal of 1664200175327 is 7235710024661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1664200175327 - 2⁶ = 1664200175263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1664200175357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832100087663 + 832100087664.

It is an arithmetic number, because the mean of its divisors is an integer number (832100087664).

Almost surely, 2^{1664200175327} is an apocalyptic number.

1664200175327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664200175327 is an equidigital number, since it uses as much as digits as its factorization.

1664200175327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 44.

Adding to 1664200175327 its reverse (7235710024661), we get a palindrome (8899910199988).

The spelling of 1664200175327 in words is "one trillion, six hundred sixty-four billion, two hundred million, one hundred seventy-five thousand, three hundred twenty-seven".