13305111215656 has 32 divisors (see below), whose sum is σ = 26866459065600. Its totient is φ = 6140736192960.

The previous prime is 13305111215603. The next prime is 13305111215681. The reversal of 13305111215656 is 65651211150331.

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 7 ways as a sum of consecutive naturals, for example, 7071421 + ... + 8753011.

It is an arithmetic number, because the mean of its divisors is an integer number (839576845800).

Almost surely, 2^{13305111215656} is an apocalyptic number.

It is an amenable number.

13305111215656 is an abundant number, since it is smaller than the sum of its proper divisors (13561347849944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13305111215656 is a wasteful number, since it uses less digits than its factorization.

13305111215656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757689 (or 1757685 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 40.

Adding to 13305111215656 its reverse (65651211150331), we get a palindrome (78956322365987).

The spelling of 13305111215656 in words is "thirteen trillion, three hundred five billion, one hundred eleven million, two hundred fifteen thousand, six hundred fifty-six".