1263504527953 has 2 divisors, whose sum is σ = 1263504527954. Its totient is φ = 1263504527952.

The previous prime is 1263504527941. The next prime is 1263504528047. The reversal of 1263504527953 is 3597254053621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 968320945089 + 295183582864 = 984033^2 + 543308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1263504527953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1263504527953.

It is not a weakly prime, because it can be changed into another prime (1263504525953) 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, 631752263976 + 631752263977.

It is an arithmetic number, because the mean of its divisors is an integer number (631752263977).

Almost surely, 2^{1263504527953} is an apocalyptic number.

It is an amenable number.

1263504527953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263504527953 is an equidigital number, since it uses as much as digits as its factorization.

1263504527953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804000, while the sum is 52.

The spelling of 1263504527953 in words is "one trillion, two hundred sixty-three billion, five hundred four million, five hundred twenty-seven thousand, nine hundred fifty-three".