1311456236645 has 32 divisors (see below), whose sum is σ = 1663614737280. Its totient is φ = 989727621120.

The previous prime is 1311456236603. The next prime is 1311456236669. The reversal of 1311456236645 is 5466326541131.

It is not a de Polignac number, because 1311456236645 - 2⁶ = 1311456236581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311456236645.

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 31 ways as a sum of consecutive naturals, for example, 40640357 + ... + 40672613.

It is an arithmetic number, because the mean of its divisors is an integer number (51987960540).

Almost surely, 2^{1311456236645} is an apocalyptic number.

It is an amenable number.

1311456236645 is a deficient number, since it is larger than the sum of its proper divisors (352158500635).

1311456236645 is a wasteful number, since it uses less digits than its factorization.

1311456236645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34085.

The product of its digits is 1555200, while the sum is 47.

The spelling of 1311456236645 in words is "one trillion, three hundred eleven billion, four hundred fifty-six million, two hundred thirty-six thousand, six hundred forty-five".