13113332520 has 64 divisors (see below), whose sum is σ = 40696560000. Its totient is φ = 3376305408.

The previous prime is 13113332513. The next prime is 13113332593. The reversal of 13113332520 is 2523331131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1880620 + ... + 1887579.

It is an arithmetic number, because the mean of its divisors is an integer number (635883750).

Almost surely, 2^13113332520 is an apocalyptic number.

13113332520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13113332520 is an abundant number, since it is smaller than the sum of its proper divisors (27583227480).

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

13113332520 is a wasteful number, since it uses less digits than its factorization.

13113332520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768242 (or 3768238 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 13113332520 its reverse (2523331131), we get a palindrome (15636663651).

The spelling of 13113332520 in words is "thirteen billion, one hundred thirteen million, three hundred thirty-two thousand, five hundred twenty".