263318961079 has 2 divisors, whose sum is σ = 263318961080. Its totient is φ = 263318961078.

The previous prime is 263318960953. The next prime is 263318961097. The reversal of 263318961079 is 970169813362.

Together with next prime (263318961097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263318961079 - 2¹¹ = 263318959031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263318961379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131659480539 + 131659480540.

It is an arithmetic number, because the mean of its divisors is an integer number (131659480540).

Almost surely, 2^263318961079 is an apocalyptic number.

263318961079 is a deficient number, since it is larger than the sum of its proper divisors (1).

263318961079 is an equidigital number, since it uses as much as digits as its factorization.

263318961079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 263318961079 in words is "two hundred sixty-three billion, three hundred eighteen million, nine hundred sixty-one thousand, seventy-nine".