1276525013963 has 2 divisors, whose sum is σ = 1276525013964. Its totient is φ = 1276525013962.

The previous prime is 1276525013957. The next prime is 1276525014073. The reversal of 1276525013963 is 3693105256721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1276525013963 - 2⁴ = 1276525013947 is a prime.

It is a super-2 number, since 2×1276525013963² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1276525010963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638262506981 + 638262506982.

It is an arithmetic number, because the mean of its divisors is an integer number (638262506982).

Almost surely, 2^{1276525013963} is an apocalyptic number.

1276525013963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276525013963 is an equidigital number, since it uses as much as digits as its factorization.

1276525013963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2041200, while the sum is 50.

The spelling of 1276525013963 in words is "one trillion, two hundred seventy-six billion, five hundred twenty-five million, thirteen thousand, nine hundred sixty-three".