1263758704489 has 2 divisors, whose sum is σ = 1263758704490. Its totient is φ = 1263758704488.

The previous prime is 1263758704433. The next prime is 1263758704501. The reversal of 1263758704489 is 9844078573621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1082448806464 + 181309898025 = 1040408^2 + 425805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263758704489 - 2¹¹ = 1263758702441 is a prime.

It is a super-2 number, since 2×1263758704489² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1263758704489.

It is not a weakly prime, because it can be changed into another prime (1263758704409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631879352244 + 631879352245.

It is an arithmetic number, because the mean of its divisors is an integer number (631879352245).

It is a 1-persistent number, because it is pandigital, but 2⋅1263758704489 = 2527517408978 is not.

Almost surely, 2^{1263758704489} is an apocalyptic number.

It is an amenable number.

1263758704489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263758704489 is an equidigital number, since it uses as much as digits as its factorization.

1263758704489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 1263758704489 in words is "one trillion, two hundred sixty-three billion, seven hundred fifty-eight million, seven hundred four thousand, four hundred eighty-nine".