1276545204563 has 2 divisors, whose sum is σ = 1276545204564. Its totient is φ = 1276545204562.

The previous prime is 1276545204559. The next prime is 1276545204667. The reversal of 1276545204563 is 3654025456721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1276545204563 - 2² = 1276545204559 is a prime.

It is not a weakly prime, because it can be changed into another prime (1276545204163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638272602281 + 638272602282.

It is an arithmetic number, because the mean of its divisors is an integer number (638272602282).

Almost surely, 2^{1276545204563} is an apocalyptic number.

1276545204563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276545204563 is an equidigital number, since it uses as much as digits as its factorization.

1276545204563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 1276545204563 in words is "one trillion, two hundred seventy-six billion, five hundred forty-five million, two hundred four thousand, five hundred sixty-three".