263536351404461 has 2 divisors, whose sum is σ = 263536351404462. Its totient is φ = 263536351404460.

The previous prime is 263536351404451. The next prime is 263536351404463. The reversal of 263536351404461 is 164404153635362.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258086956057225 + 5449395347236 = 16065085^2 + 2334394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263536351404461 is a prime.

Together with 263536351404463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263536351404463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131768175702230 + 131768175702231.

It is an arithmetic number, because the mean of its divisors is an integer number (131768175702231).

Almost surely, 2^{263536351404461} is an apocalyptic number.

It is an amenable number.

263536351404461 is a deficient number, since it is larger than the sum of its proper divisors (1).

263536351404461 is an equidigital number, since it uses as much as digits as its factorization.

263536351404461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18662400, while the sum is 53.

The spelling of 263536351404461 in words is "two hundred sixty-three trillion, five hundred thirty-six billion, three hundred fifty-one million, four hundred four thousand, four hundred sixty-one".