263668003372811 has 2 divisors, whose sum is σ = 263668003372812. Its totient is φ = 263668003372810.

The previous prime is 263668003372799. The next prime is 263668003372819. The reversal of 263668003372811 is 118273300866362.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263668003372811 is a prime.

It is not a weakly prime, because it can be changed into another prime (263668003372819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131834001686405 + 131834001686406.

It is an arithmetic number, because the mean of its divisors is an integer number (131834001686406).

Almost surely, 2^{263668003372811} is an apocalyptic number.

263668003372811 is a deficient number, since it is larger than the sum of its proper divisors (1).

263668003372811 is an equidigital number, since it uses as much as digits as its factorization.

263668003372811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 263668003372811 in words is "two hundred sixty-three trillion, six hundred sixty-eight billion, three million, three hundred seventy-two thousand, eight hundred eleven".