1311641238745 has 16 divisors (see below), whose sum is σ = 1687651580160. Its totient is φ = 975087569664.

The previous prime is 1311641238737. The next prime is 1311641238767. The reversal of 1311641238745 is 5478321461131.

It is a cyclic number.

It is not a de Polignac number, because 1311641238745 - 2³ = 1311641238737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311641238695 and 1311641238704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97658307 + ... + 97671736.

It is an arithmetic number, because the mean of its divisors is an integer number (105478223760).

Almost surely, 2^{1311641238745} is an apocalyptic number.

It is an amenable number.

1311641238745 is a deficient number, since it is larger than the sum of its proper divisors (376010341415).

1311641238745 is a wasteful number, since it uses less digits than its factorization.

1311641238745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195330144.

The product of its digits is 483840, while the sum is 46.

Adding to 1311641238745 its reverse (5478321461131), we get a palindrome (6789962699876).

The spelling of 1311641238745 in words is "one trillion, three hundred eleven billion, six hundred forty-one million, two hundred thirty-eight thousand, seven hundred forty-five".