1263322325539 has 2 divisors, whose sum is σ = 1263322325540. Its totient is φ = 1263322325538.

The previous prime is 1263322325521. The next prime is 1263322325543. The reversal of 1263322325539 is 9355232233621.

It is a strong prime.

It is an emirp because it is prime and its reverse (9355232233621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1263322325539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263322325549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631661162769 + 631661162770.

It is an arithmetic number, because the mean of its divisors is an integer number (631661162770).

Almost surely, 2^{1263322325539} is an apocalyptic number.

1263322325539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263322325539 is an equidigital number, since it uses as much as digits as its factorization.

1263322325539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1749600, while the sum is 46.

The spelling of 1263322325539 in words is "one trillion, two hundred sixty-three billion, three hundred twenty-two million, three hundred twenty-five thousand, five hundred thirty-nine".