13517128240 has 120 divisors (see below), whose sum is σ = 39881925072. Its totient is φ = 4213117440.

The previous prime is 13517128237. The next prime is 13517128241. The reversal of 13517128240 is 4282171531.

It is a junction number, because it is equal to n+sod(n) for n = 13517128196 and 13517128205.

It is not an unprimeable number, because it can be changed into a prime (13517128241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113619 + ... + 199858.

Almost surely, 2^13517128240 is an apocalyptic number.

13517128240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13517128240 is an abundant number, since it is smaller than the sum of its proper divisors (26364796832).

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

13517128240 is a wasteful number, since it uses less digits than its factorization.

13517128240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313515 (or 313502 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 13517128240 its reverse (4282171531), we get a palindrome (17799299771).

The spelling of 13517128240 in words is "thirteen billion, five hundred seventeen million, one hundred twenty-eight thousand, two hundred forty".