4001223668693 has 2 divisors, whose sum is σ = 4001223668694. Its totient is φ = 4001223668692.

The previous prime is 4001223668633. The next prime is 4001223668731. The reversal of 4001223668693 is 3968663221004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2920004275204 + 1081219393489 = 1708802^2 + 1039817^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001223668693 - 2¹⁸ = 4001223406549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001223668633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000611834346 + 2000611834347.

It is an arithmetic number, because the mean of its divisors is an integer number (2000611834347).

Almost surely, 2^{4001223668693} is an apocalyptic number.

It is an amenable number.

4001223668693 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001223668693 is an equidigital number, since it uses as much as digits as its factorization.

4001223668693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 50.

Adding to 4001223668693 its reverse (3968663221004), we get a palindrome (7969886889697).

The spelling of 4001223668693 in words is "four trillion, one billion, two hundred twenty-three million, six hundred sixty-eight thousand, six hundred ninety-three".