13113440204520 has 128 divisors (see below), whose sum is σ = 41656252371840. Its totient is φ = 3291074519040.

The previous prime is 13113440204419. The next prime is 13113440204521. The reversal of 13113440204520 is 2540204431131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (13113440204521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52018699 + ... + 52270181.

It is an arithmetic number, because the mean of its divisors is an integer number (325439471655).

Almost surely, 2^{13113440204520} is an apocalyptic number.

13113440204520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13113440204520 is an abundant number, since it is smaller than the sum of its proper divisors (28542812167320).

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

13113440204520 is a wasteful number, since it uses less digits than its factorization.

13113440204520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277075 (or 277071 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 13113440204520 its reverse (2540204431131), we get a palindrome (15653644635651).

The spelling of 13113440204520 in words is "thirteen trillion, one hundred thirteen billion, four hundred forty million, two hundred four thousand, five hundred twenty".