13155323312511 has 24 divisors (see below), whose sum is σ = 19097742081600. Its totient is φ = 8726197144896.

The previous prime is 13155323312471. The next prime is 13155323312587. The reversal of 13155323312511 is 11521332355131.

13155323312511 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 5 + 323 + 312 + 5 + 11 = 666.

It is not a de Polignac number, because 13155323312511 - 2¹¹ = 13155323310463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155323316511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3068676 + ... + 5977241.

It is an arithmetic number, because the mean of its divisors is an integer number (795739253400).

Almost surely, 2^{13155323312511} is an apocalyptic number.

13155323312511 is a deficient number, since it is larger than the sum of its proper divisors (5942418769089).

13155323312511 is a wasteful number, since it uses less digits than its factorization.

13155323312511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9046735 (or 9046732 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

Adding to 13155323312511 its reverse (11521332355131), we get a palindrome (24676655667642).

The spelling of 13155323312511 in words is "thirteen trillion, one hundred fifty-five billion, three hundred twenty-three million, three hundred twelve thousand, five hundred eleven".