1311466855844 has 24 divisors (see below), whose sum is σ = 2351644692768. Its totient is φ = 639576541760.

The previous prime is 1311466855813. The next prime is 1311466855891. The reversal of 1311466855844 is 4485586641131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311466855844.

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 7 ways as a sum of consecutive naturals, for example, 375842 + ... + 1662585.

It is an arithmetic number, because the mean of its divisors is an integer number (97985195532).

Almost surely, 2^{1311466855844} is an apocalyptic number.

It is an amenable number.

1311466855844 is a deficient number, since it is larger than the sum of its proper divisors (1040177836924).

1311466855844 is a wasteful number, since it uses less digits than its factorization.

1311466855844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042395 (or 2042393 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 56.

The spelling of 1311466855844 in words is "one trillion, three hundred eleven billion, four hundred sixty-six million, eight hundred fifty-five thousand, eight hundred forty-four".