1311415555443 has 32 divisors (see below), whose sum is σ = 2041631565312. Its totient is φ = 733276108800.

The previous prime is 1311415555393. The next prime is 1311415555453. The reversal of 1311415555443 is 3445555141131.

It is not a de Polignac number, because 1311415555443 - 2⁹ = 1311415554931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311415555395 and 1311415555404.

It is not an unprimeable number, because it can be changed into a prime (1311415555453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2404953 + ... + 2899418.

It is an arithmetic number, because the mean of its divisors is an integer number (63800986416).

Almost surely, 2^{1311415555443} is an apocalyptic number.

1311415555443 is a deficient number, since it is larger than the sum of its proper divisors (730216009869).

1311415555443 is a wasteful number, since it uses less digits than its factorization.

1311415555443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5304635.

The product of its digits is 360000, while the sum is 42.

The spelling of 1311415555443 in words is "one trillion, three hundred eleven billion, four hundred fifteen million, five hundred fifty-five thousand, four hundred forty-three".