263332861793 has 2 divisors, whose sum is σ = 263332861794. Its totient is φ = 263332861792.

The previous prime is 263332861783. The next prime is 263332861843. The reversal of 263332861793 is 397168233362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173974912609 + 89357949184 = 417103^2 + 298928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263332861793 is a prime.

It is a super-2 number, since 2×263332861793² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (263332861783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131666430896 + 131666430897.

It is an arithmetic number, because the mean of its divisors is an integer number (131666430897).

Almost surely, 2^263332861793 is an apocalyptic number.

It is an amenable number.

263332861793 is a deficient number, since it is larger than the sum of its proper divisors (1).

263332861793 is an equidigital number, since it uses as much as digits as its factorization.

263332861793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 53.

The spelling of 263332861793 in words is "two hundred sixty-three billion, three hundred thirty-two million, eight hundred sixty-one thousand, seven hundred ninety-three".