263285060921 has 2 divisors, whose sum is σ = 263285060922. Its totient is φ = 263285060920.

The previous prime is 263285060851. The next prime is 263285060933. The reversal of 263285060921 is 129060582362.

263285060921 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., 212211320896 + 51073740025 = 460664^2 + 225995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263285060921 is a prime.

It is not a weakly prime, because it can be changed into another prime (263285060981) 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, 131642530460 + 131642530461.

It is an arithmetic number, because the mean of its divisors is an integer number (131642530461).

Almost surely, 2^263285060921 is an apocalyptic number.

It is an amenable number.

263285060921 is a deficient number, since it is larger than the sum of its proper divisors (1).

263285060921 is an equidigital number, since it uses as much as digits as its factorization.

263285060921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 263285060921 in words is "two hundred sixty-three billion, two hundred eighty-five million, sixty thousand, nine hundred twenty-one".