2808638916667 has 2 divisors, whose sum is σ = 2808638916668. Its totient is φ = 2808638916666.

The previous prime is 2808638916659. The next prime is 2808638916851. The reversal of 2808638916667 is 7666198368082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2808638916667 - 2³ = 2808638916659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2808638916596 and 2808638916605.

It is not a weakly prime, because it can be changed into another prime (2808638116667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404319458333 + 1404319458334.

It is an arithmetic number, because the mean of its divisors is an integer number (1404319458334).

Almost surely, 2^{2808638916667} is an apocalyptic number.

2808638916667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2808638916667 is an equidigital number, since it uses as much as digits as its factorization.

2808638916667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250822656, while the sum is 70.

The spelling of 2808638916667 in words is "two trillion, eight hundred eight billion, six hundred thirty-eight million, nine hundred sixteen thousand, six hundred sixty-seven".