13556228446917 has 32 divisors (see below), whose sum is σ = 21932792904960. Its totient is φ = 8224797309120.

The previous prime is 13556228446907. The next prime is 13556228446919. The reversal of 13556228446917 is 71964482265531.

It is a happy number.

13556228446917 is a `hidden beast` number, since 1 + 3 + 5 + 562 + 2 + 8 + 4 + 4 + 69 + 1 + 7 = 666.

It is not a de Polignac number, because 13556228446917 - 2²³ = 13556220058309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13556228446919) 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, 271959118 + ... + 272008959.

It is an arithmetic number, because the mean of its divisors is an integer number (685399778280).

Almost surely, 2^{13556228446917} is an apocalyptic number.

It is an amenable number.

13556228446917 is a deficient number, since it is larger than the sum of its proper divisors (8376564458043).

13556228446917 is a wasteful number, since it uses less digits than its factorization.

13556228446917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543968170 (or 543968164 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 63.

The spelling of 13556228446917 in words is "thirteen trillion, five hundred fifty-six billion, two hundred twenty-eight million, four hundred forty-six thousand, nine hundred seventeen".