2668742899111 has 2 divisors, whose sum is σ = 2668742899112. Its totient is φ = 2668742899110.

The previous prime is 2668742899099. The next prime is 2668742899223. The reversal of 2668742899111 is 1119982478662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2668742899111 - 2²¹ = 2668740801959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2668742899811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334371449555 + 1334371449556.

It is an arithmetic number, because the mean of its divisors is an integer number (1334371449556).

Almost surely, 2^{2668742899111} is an apocalyptic number.

2668742899111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668742899111 is an equidigital number, since it uses as much as digits as its factorization.

2668742899111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20901888, while the sum is 64.

The spelling of 2668742899111 in words is "two trillion, six hundred sixty-eight billion, seven hundred forty-two million, eight hundred ninety-nine thousand, one hundred eleven".