1645315795223 has 2 divisors, whose sum is σ = 1645315795224. Its totient is φ = 1645315795222.

The previous prime is 1645315795169. The next prime is 1645315795271. The reversal of 1645315795223 is 3225975135461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1645315795223 - 2¹⁴ = 1645315778839 is a prime.

It is a super-3 number, since 3×1645315795223³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1645315795273) 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, 822657897611 + 822657897612.

It is an arithmetic number, because the mean of its divisors is an integer number (822657897612).

Almost surely, 2^{1645315795223} is an apocalyptic number.

1645315795223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1645315795223 is an equidigital number, since it uses as much as digits as its factorization.

1645315795223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804000, while the sum is 53.

The spelling of 1645315795223 in words is "one trillion, six hundred forty-five billion, three hundred fifteen million, seven hundred ninety-five thousand, two hundred twenty-three".