263894460481 has 2 divisors, whose sum is σ = 263894460482. Its totient is φ = 263894460480.

The previous prime is 263894460463. The next prime is 263894460493. The reversal of 263894460481 is 184064498362.

263894460481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248760540081 + 15133920400 = 498759^2 + 123020^2 .

It is a cyclic number.

It is not a de Polignac number, because 263894460481 - 2¹¹ = 263894458433 is a prime.

It is a super-2 number, since 2×263894460481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (263894460421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131947230240 + 131947230241.

It is an arithmetic number, because the mean of its divisors is an integer number (131947230241).

Almost surely, 2^263894460481 is an apocalyptic number.

It is an amenable number.

263894460481 is a deficient number, since it is larger than the sum of its proper divisors (1).

263894460481 is an equidigital number, since it uses as much as digits as its factorization.

263894460481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7962624, while the sum is 55.

The spelling of 263894460481 in words is "two hundred sixty-three billion, eight hundred ninety-four million, four hundred sixty thousand, four hundred eighty-one".