13611144356120 has 128 divisors (see below), whose sum is σ = 33190807795200. Its totient is φ = 5003496830976.

The previous prime is 13611144356083. The next prime is 13611144356323. The reversal of 13611144356120 is 2165344111631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97796741 + ... + 97935819.

It is an arithmetic number, because the mean of its divisors is an integer number (259303185900).

Almost surely, 2^{13611144356120} is an apocalyptic number.

13611144356120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13611144356120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16595403897600).

13611144356120 is an abundant number, since it is smaller than the sum of its proper divisors (19579663439080).

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

13611144356120 is a wasteful number, since it uses less digits than its factorization.

13611144356120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142497 (or 142493 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 13611144356120 its reverse (2165344111631), we get a palindrome (15776488467751).

The spelling of 13611144356120 in words is "thirteen trillion, six hundred eleven billion, one hundred forty-four million, three hundred fifty-six thousand, one hundred twenty".