1276210653923 has 2 divisors, whose sum is σ = 1276210653924. Its totient is φ = 1276210653922.

The previous prime is 1276210653899. The next prime is 1276210653937. The reversal of 1276210653923 is 3293560126721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1276210653923 - 2¹² = 1276210649827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1276210653983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638105326961 + 638105326962.

It is an arithmetic number, because the mean of its divisors is an integer number (638105326962).

Almost surely, 2^{1276210653923} is an apocalyptic number.

1276210653923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276210653923 is an equidigital number, since it uses as much as digits as its factorization.

1276210653923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 1276210653923 in words is "one trillion, two hundred seventy-six billion, two hundred ten million, six hundred fifty-three thousand, nine hundred twenty-three".