13123340522240 has 144 divisors (see below), whose sum is σ = 33906216340416. Its totient is φ = 4837858099200.

The previous prime is 13123340522207. The next prime is 13123340522267. The reversal of 13123340522240 is 4222504332131.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 13123340522197 and 13123340522206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9874910 + ... + 11124770.

Almost surely, 2^{13123340522240} is an apocalyptic number.

13123340522240 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 13123340522240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16953108170208).

13123340522240 is an abundant number, since it is smaller than the sum of its proper divisors (20782875818176).

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

13123340522240 is a wasteful number, since it uses less digits than its factorization.

13123340522240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250526 (or 1250512 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 13123340522240 its reverse (4222504332131), we get a palindrome (17345844854371).

The spelling of 13123340522240 in words is "thirteen trillion, one hundred twenty-three billion, three hundred forty million, five hundred twenty-two thousand, two hundred forty".