817868775223 has 2 divisors, whose sum is σ = 817868775224. Its totient is φ = 817868775222.

The previous prime is 817868775181. The next prime is 817868775233. The reversal of 817868775223 is 322577868718.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 817868775223 - 2¹³ = 817868767031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (817868775233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408934387611 + 408934387612.

It is an arithmetic number, because the mean of its divisors is an integer number (408934387612).

Almost surely, 2^817868775223 is an apocalyptic number.

817868775223 is a deficient number, since it is larger than the sum of its proper divisors (1).

817868775223 is an equidigital number, since it uses as much as digits as its factorization.

817868775223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63221760, while the sum is 64.

The spelling of 817868775223 in words is "eight hundred seventeen billion, eight hundred sixty-eight million, seven hundred seventy-five thousand, two hundred twenty-three".