13155320320000 has 260 divisors, whose sum is σ = 34604089146880. Its totient is φ = 4985155584000.

The previous prime is 13155320319961. The next prime is 13155320320001. The reversal of 13155320320000 is 2302355131.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155320320001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48504769 + ... + 48775231.

Almost surely, 2^{13155320320000} is an apocalyptic number.

13155320320000 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 13155320320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17302044573440).

13155320320000 is an abundant number, since it is smaller than the sum of its proper divisors (21448768826880).

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

13155320320000 is an frugal number, since it uses more digits than its factorization.

13155320320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270526 (or 270489 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 13155320320000 its reverse (2302355131), we get a palindrome (13157622675131).

The spelling of 13155320320000 in words is "thirteen trillion, one hundred fifty-five billion, three hundred twenty million, three hundred twenty thousand".