1311643046255 has 4 divisors (see below), whose sum is σ = 1573971655512. Its totient is φ = 1049314437000.

The previous prime is 1311643046243. The next prime is 1311643046261. The reversal of 1311643046255 is 5526403461131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1311643046255 - 2¹⁰ = 1311643045231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 131164304621 + ... + 131164304630.

It is an arithmetic number, because the mean of its divisors is an integer number (393492913878).

Almost surely, 2^{1311643046255} is an apocalyptic number.

1311643046255 is a deficient number, since it is larger than the sum of its proper divisors (262328609257).

1311643046255 is an equidigital number, since it uses as much as digits as its factorization.

1311643046255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262328609256.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 1311643046255 in words is "one trillion, three hundred eleven billion, six hundred forty-three million, forty-six thousand, two hundred fifty-five".