135115568 has 40 divisors (see below), whose sum is σ = 302293152. Its totient is φ = 57305088.

The previous prime is 135115537. The next prime is 135115583. The reversal of 135115568 is 865511531.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4646 + ... + 17082.

Almost surely, 2^135115568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135115568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151146576).

135115568 is an abundant number, since it is smaller than the sum of its proper divisors (167177584).

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

135115568 is a wasteful number, since it uses less digits than its factorization.

135115568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12549 (or 12543 counting only the distinct ones).

The product of its digits is 18000, while the sum is 35.

The square root of 135115568 is about 11623.9222296091. The cubic root of 135115568 is about 513.1391263259.

The spelling of 135115568 in words is "one hundred thirty-five million, one hundred fifteen thousand, five hundred sixty-eight".