135638434825 has 12 divisors (see below), whose sum is σ = 169036849600. Its totient is φ = 107965463760.

The previous prime is 135638434793. The next prime is 135638434843. The reversal of 135638434825 is 528434836531.

It is not a de Polignac number, because 135638434825 - 2⁵ = 135638434793 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13627029 + ... + 13636978.

Almost surely, 2^135638434825 is an apocalyptic number.

It is an amenable number.

135638434825 is a deficient number, since it is larger than the sum of its proper divisors (33398414775).

135638434825 is a wasteful number, since it uses less digits than its factorization.

135638434825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27264216 (or 27264211 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 52.

The spelling of 135638434825 in words is "one hundred thirty-five billion, six hundred thirty-eight million, four hundred thirty-four thousand, eight hundred twenty-five".