13520323340 has 24 divisors (see below), whose sum is σ = 28562702112. Its totient is φ = 5375744000.

The previous prime is 13520323337. The next prime is 13520323343. The reversal of 13520323340 is 4332302531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13520323337) and next prime (13520323343).

It is not an unprimeable number, because it can be changed into a prime (13520323343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2020661 + ... + 2027340.

It is an arithmetic number, because the mean of its divisors is an integer number (1190112588).

Almost surely, 2^13520323340 is an apocalyptic number.

13520323340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13520323340 is an abundant number, since it is smaller than the sum of its proper divisors (15042378772).

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

13520323340 is a wasteful number, since it uses less digits than its factorization.

13520323340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048177 (or 4048175 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 13520323340 its reverse (4332302531), we get a palindrome (17852625871).

The spelling of 13520323340 in words is "thirteen billion, five hundred twenty million, three hundred twenty-three thousand, three hundred forty".