1276609611963 has 24 divisors (see below), whose sum is σ = 2084260595520. Its totient is φ = 691096931280.

The previous prime is 1276609611883. The next prime is 1276609611967. The reversal of 1276609611963 is 3691169066721.

It is not a de Polignac number, because 1276609611963 - 2³⁸ = 1001731705019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (1276609611967) 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 in 23 ways as a sum of consecutive naturals, for example, 228534553 + ... + 228540138.

It is an arithmetic number, because the mean of its divisors is an integer number (86844191480).

Almost surely, 2^{1276609611963} is an apocalyptic number.

1276609611963 is a deficient number, since it is larger than the sum of its proper divisors (807650983557).

1276609611963 is a wasteful number, since it uses less digits than its factorization.

1276609611963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457074727 (or 457074720 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 57.

The spelling of 1276609611963 in words is "one trillion, two hundred seventy-six billion, six hundred nine million, six hundred eleven thousand, nine hundred sixty-three".