13556234613450 has 96 divisors (see below), whose sum is σ = 33820876593216. Its totient is φ = 3593347164160.

The previous prime is 13556234613443. The next prime is 13556234613451. The reversal of 13556234613450 is 5431643265531.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13556234613450.

It is not an unprimeable number, because it can be changed into a prime (13556234613451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129775642 + ... + 129880058.

It is an arithmetic number, because the mean of its divisors is an integer number (352300797846).

Almost surely, 2^{13556234613450} is an apocalyptic number.

13556234613450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13556234613450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16910438296608).

13556234613450 is an abundant number, since it is smaller than the sum of its proper divisors (20264641979766).

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

13556234613450 is a wasteful number, since it uses less digits than its factorization.

13556234613450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109608 (or 109603 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 48.

Adding to 13556234613450 its reverse (5431643265531), we get a palindrome (18987877878981).

The spelling of 13556234613450 in words is "thirteen trillion, five hundred fifty-six billion, two hundred thirty-four million, six hundred thirteen thousand, four hundred fifty".