1311126546663 has 16 divisors (see below), whose sum is σ = 1942441855200. Its totient is φ = 874069894080.

The previous prime is 1311126546659. The next prime is 1311126546671. The reversal of 1311126546663 is 3666456211131.

It is not a de Polignac number, because 1311126546663 - 2² = 1311126546659 is a prime.

It is a super-3 number, since 3×1311126546663³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311126546463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1407243 + ... + 2145363.

It is an arithmetic number, because the mean of its divisors is an integer number (121402615950).

Almost surely, 2^{1311126546663} is an apocalyptic number.

1311126546663 is a deficient number, since it is larger than the sum of its proper divisors (631315308537).

1311126546663 is an equidigital number, since it uses as much as digits as its factorization.

1311126546663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803919 (or 803913 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The spelling of 1311126546663 in words is "one trillion, three hundred eleven billion, one hundred twenty-six million, five hundred forty-six thousand, six hundred sixty-three".