2668742899223 has 2 divisors, whose sum is σ = 2668742899224. Its totient is φ = 2668742899222.

The previous prime is 2668742899111. The next prime is 2668742899231. The reversal of 2668742899223 is 3229982478662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2668742899223 - 2¹² = 2668742895127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2668742899243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334371449611 + 1334371449612.

It is an arithmetic number, because the mean of its divisors is an integer number (1334371449612).

Almost surely, 2^{2668742899223} is an apocalyptic number.

2668742899223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668742899223 is an equidigital number, since it uses as much as digits as its factorization.

2668742899223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250822656, while the sum is 68.

The spelling of 2668742899223 in words is "two trillion, six hundred sixty-eight billion, seven hundred forty-two million, eight hundred ninety-nine thousand, two hundred twenty-three".