263708428339 has 2 divisors, whose sum is σ = 263708428340. Its totient is φ = 263708428338.

The previous prime is 263708428307. The next prime is 263708428351. The reversal of 263708428339 is 933824807362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263708428339 - 2⁵ = 263708428307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 263708428339.

It is not a weakly prime, because it can be changed into another prime (263708428369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131854214169 + 131854214170.

It is an arithmetic number, because the mean of its divisors is an integer number (131854214170).

Almost surely, 2^263708428339 is an apocalyptic number.

263708428339 is a deficient number, since it is larger than the sum of its proper divisors (1).

263708428339 is an equidigital number, since it uses as much as digits as its factorization.

263708428339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10450944, while the sum is 55.

The spelling of 263708428339 in words is "two hundred sixty-three billion, seven hundred eight million, four hundred twenty-eight thousand, three hundred thirty-nine".