1276761057731 has 2 divisors, whose sum is σ = 1276761057732. Its totient is φ = 1276761057730.

The previous prime is 1276761057721. The next prime is 1276761057757. The reversal of 1276761057731 is 1377501676721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1276761057731 - 2³⁸ = 1001883150787 is a prime.

It is a super-2 number, since 2×1276761057731² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1276761057721) 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, 638380528865 + 638380528866.

It is an arithmetic number, because the mean of its divisors is an integer number (638380528866).

Almost surely, 2^{1276761057731} is an apocalyptic number.

1276761057731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276761057731 is an equidigital number, since it uses as much as digits as its factorization.

1276761057731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2593080, while the sum is 53.

The spelling of 1276761057731 in words is "one trillion, two hundred seventy-six billion, seven hundred sixty-one million, fifty-seven thousand, seven hundred thirty-one".