263041212257 has 2 divisors, whose sum is σ = 263041212258. Its totient is φ = 263041212256.

The previous prime is 263041212227. The next prime is 263041212283. The reversal of 263041212257 is 752212140362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241713822736 + 21327389521 = 491644^2 + 146039^2 .

It is a cyclic number.

It is not a de Polignac number, because 263041212257 - 2⁸ = 263041212001 is a prime.

It is not a weakly prime, because it can be changed into another prime (263041212227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131520606128 + 131520606129.

It is an arithmetic number, because the mean of its divisors is an integer number (131520606129).

Almost surely, 2^263041212257 is an apocalyptic number.

It is an amenable number.

263041212257 is a deficient number, since it is larger than the sum of its proper divisors (1).

263041212257 is an equidigital number, since it uses as much as digits as its factorization.

263041212257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 263041212257 in words is "two hundred sixty-three billion, forty-one million, two hundred twelve thousand, two hundred fifty-seven".