13553215240000 has 140 divisors (see below), whose sum is σ = 33634860402484. Its totient is φ = 5416883712000.

The previous prime is 13553215239953. The next prime is 13553215240007. The reversal of 13553215240000 is 4251235531.

It can be written as a sum of positive squares in 10 ways, for example, as 11036321833216 + 2516893406784 = 3322096^2 + 1586472^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13553215240007) 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, 49343044 + ... + 49616956.

Almost surely, 2^{13553215240000} is an apocalyptic number.

13553215240000 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 13553215240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16817430201242).

13553215240000 is an abundant number, since it is smaller than the sum of its proper divisors (20081645162484).

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

13553215240000 is an equidigital number, since it uses as much as digits as its factorization.

13553215240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275182 (or 275157 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 13553215240000 its reverse (4251235531), we get a palindrome (13557466475531).

The spelling of 13553215240000 in words is "thirteen trillion, five hundred fifty-three billion, two hundred fifteen million, two hundred forty thousand".