135517002440 has 16 divisors (see below), whose sum is σ = 304913255580. Its totient is φ = 54206800960.

The previous prime is 135517002433. The next prime is 135517002451. The reversal of 135517002440 is 44200715531.

It can be written as a sum of positive squares in 2 ways, for example, as 129999186916 + 5517815524 = 360554^2 + 74282^2 .

It is a junction number, because it is equal to n+sod(n) for n = 135517002397 and 135517002406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1693962491 + ... + 1693962570.

Almost surely, 2^135517002440 is an apocalyptic number.

135517002440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135517002440 is an abundant number, since it is smaller than the sum of its proper divisors (169396253140).

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

135517002440 is a wasteful number, since it uses less digits than its factorization.

135517002440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387925072 (or 3387925068 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 135517002440 its reverse (44200715531), we get a palindrome (179717717971).

The spelling of 135517002440 in words is "one hundred thirty-five billion, five hundred seventeen million, two thousand, four hundred forty".