1276340838463 has 2 divisors, whose sum is σ = 1276340838464. Its totient is φ = 1276340838462.

The previous prime is 1276340838449. The next prime is 1276340838527. The reversal of 1276340838463 is 3648380436721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1276340838463 - 2³³ = 1267750903871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1276340838163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638170419231 + 638170419232.

It is an arithmetic number, because the mean of its divisors is an integer number (638170419232).

Almost surely, 2^{1276340838463} is an apocalyptic number.

1276340838463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276340838463 is an equidigital number, since it uses as much as digits as its factorization.

1276340838463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 55.

The spelling of 1276340838463 in words is "one trillion, two hundred seventy-six billion, three hundred forty million, eight hundred thirty-eight thousand, four hundred sixty-three".