1664200175263 has 2 divisors, whose sum is σ = 1664200175264. Its totient is φ = 1664200175262.

The previous prime is 1664200175203. The next prime is 1664200175273. The reversal of 1664200175263 is 3625710024661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1664200175263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1664200175203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832100087631 + 832100087632.

It is an arithmetic number, because the mean of its divisors is an integer number (832100087632).

Almost surely, 2^{1664200175263} is an apocalyptic number.

1664200175263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664200175263 is an equidigital number, since it uses as much as digits as its factorization.

1664200175263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 1664200175263 in words is "one trillion, six hundred sixty-four billion, two hundred million, one hundred seventy-five thousand, two hundred sixty-three".