1263438487583 has 2 divisors, whose sum is σ = 1263438487584. Its totient is φ = 1263438487582.

The previous prime is 1263438487543. The next prime is 1263438487601. The reversal of 1263438487583 is 3857848343621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1263438487583 - 2⁸ = 1263438487327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263438487543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631719243791 + 631719243792.

It is an arithmetic number, because the mean of its divisors is an integer number (631719243792).

Almost surely, 2^{1263438487583} is an apocalyptic number.

1263438487583 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263438487583 is an equidigital number, since it uses as much as digits as its factorization.

1263438487583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92897280, while the sum is 62.

The spelling of 1263438487583 in words is "one trillion, two hundred sixty-three billion, four hundred thirty-eight million, four hundred eighty-seven thousand, five hundred eighty-three".