3645228165823 has 2 divisors, whose sum is σ = 3645228165824. Its totient is φ = 3645228165822.

The previous prime is 3645228165767. The next prime is 3645228165827. The reversal of 3645228165823 is 3285618225463.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3645228165823 - 2⁹ = 3645228165311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3645228165827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822614082911 + 1822614082912.

It is an arithmetic number, because the mean of its divisors is an integer number (1822614082912).

Almost surely, 2^{3645228165823} is an apocalyptic number.

3645228165823 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645228165823 is an equidigital number, since it uses as much as digits as its factorization.

3645228165823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16588800, while the sum is 55.

The spelling of 3645228165823 in words is "three trillion, six hundred forty-five billion, two hundred twenty-eight million, one hundred sixty-five thousand, eight hundred twenty-three".