263318960953 has 2 divisors, whose sum is σ = 263318960954. Its totient is φ = 263318960952.

The previous prime is 263318960929. The next prime is 263318961079. The reversal of 263318960953 is 359069813362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190142218809 + 73176742144 = 436053^2 + 270512^2 .

It is a cyclic number.

It is not a de Polignac number, because 263318960953 - 2²¹ = 263316863801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 263318960894 and 263318960903.

It is not a weakly prime, because it can be changed into another prime (263318967953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131659480476 + 131659480477.

It is an arithmetic number, because the mean of its divisors is an integer number (131659480477).

Almost surely, 2^263318960953 is an apocalyptic number.

It is an amenable number.

263318960953 is a deficient number, since it is larger than the sum of its proper divisors (1).

263318960953 is an equidigital number, since it uses as much as digits as its factorization.

263318960953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6298560, while the sum is 55.

The spelling of 263318960953 in words is "two hundred sixty-three billion, three hundred eighteen million, nine hundred sixty thousand, nine hundred fifty-three".