2668331787269 has 2 divisors, whose sum is σ = 2668331787270. Its totient is φ = 2668331787268.

The previous prime is 2668331787263. The next prime is 2668331787281. The reversal of 2668331787269 is 9627871338662.

2668331787269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2654087364769 + 14244422500 = 1629137^2 + 119350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2668331787269 - 2³² = 2664036819973 is a prime.

It is a super-2 number, since 2×2668331787269² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2668331787199 and 2668331787208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2668331787263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334165893634 + 1334165893635.

It is an arithmetic number, because the mean of its divisors is an integer number (1334165893635).

Almost surely, 2^{2668331787269} is an apocalyptic number.

It is an amenable number.

2668331787269 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668331787269 is an equidigital number, since it uses as much as digits as its factorization.

2668331787269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 219469824, while the sum is 68.

The spelling of 2668331787269 in words is "two trillion, six hundred sixty-eight billion, three hundred thirty-one million, seven hundred eighty-seven thousand, two hundred sixty-nine".