135888511 has 4 divisors (see below), whose sum is σ = 148242024. Its totient is φ = 123535000.

The previous prime is 135888481. The next prime is 135888517. The reversal of 135888511 is 115888531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135888511 - 2⁵ = 135888479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135888517) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6176740 + ... + 6176761.

It is an arithmetic number, because the mean of its divisors is an integer number (37060506).

Almost surely, 2^135888511 is an apocalyptic number.

135888511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135888511 is a deficient number, since it is larger than the sum of its proper divisors (12353513).

135888511 is a wasteful number, since it uses less digits than its factorization.

135888511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12353512.

The product of its digits is 38400, while the sum is 40.

The square root of 135888511 is about 11657.1227582110. The cubic root of 135888511 is about 514.1157553946.

The spelling of 135888511 in words is "one hundred thirty-five million, eight hundred eighty-eight thousand, five hundred eleven".