1271783834963 has 2 divisors, whose sum is σ = 1271783834964. Its totient is φ = 1271783834962.

The previous prime is 1271783834941. The next prime is 1271783835013. The reversal of 1271783834963 is 3694383871721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1271783834963 - 2⁶ = 1271783834899 is a prime.

It is a super-2 number, since 2×1271783834963² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1271783834896 and 1271783834905.

It is not a weakly prime, because it can be changed into another prime (1271783834903) 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, 635891917481 + 635891917482.

It is an arithmetic number, because the mean of its divisors is an integer number (635891917482).

Almost surely, 2^{1271783834963} is an apocalyptic number.

1271783834963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271783834963 is an equidigital number, since it uses as much as digits as its factorization.

1271783834963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36578304, while the sum is 62.

The spelling of 1271783834963 in words is "one trillion, two hundred seventy-one billion, seven hundred eighty-three million, eight hundred thirty-four thousand, nine hundred sixty-three".