1645043324311 has 2 divisors, whose sum is σ = 1645043324312. Its totient is φ = 1645043324310.

The previous prime is 1645043324303. The next prime is 1645043324321. The reversal of 1645043324311 is 1134233405461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1645043324311 - 2³ = 1645043324303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1645043324321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822521662155 + 822521662156.

It is an arithmetic number, because the mean of its divisors is an integer number (822521662156).

Almost surely, 2^{1645043324311} is an apocalyptic number.

1645043324311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1645043324311 is an equidigital number, since it uses as much as digits as its factorization.

1645043324311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 1645043324311 its reverse (1134233405461), we get a palindrome (2779276729772).

The spelling of 1645043324311 in words is "one trillion, six hundred forty-five billion, forty-three million, three hundred twenty-four thousand, three hundred eleven".