135044568 has 24 divisors (see below), whose sum is σ = 365745900. Its totient is φ = 45014832.

The previous prime is 135044557. The next prime is 135044603. The reversal of 135044568 is 865440531.

It is a happy number.

135044568 is a `hidden beast` number, since 1 + 3 + 50 + 44 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 937738 + ... + 937881.

Almost surely, 2^135044568 is an apocalyptic number.

135044568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

135044568 is an abundant number, since it is smaller than the sum of its proper divisors (230701332).

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

135044568 is a wasteful number, since it uses less digits than its factorization.

135044568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875631 (or 1875624 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 135044568 is about 11620.8677817106. The cubic root of 135044568 is about 513.0492297978.

The spelling of 135044568 in words is "one hundred thirty-five million, forty-four thousand, five hundred sixty-eight".