135145688 has 8 divisors (see below), whose sum is σ = 253398180. Its totient is φ = 67572840.

The previous prime is 135145639. The next prime is 135145739. The reversal of 135145688 is 886541531.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8446598 + ... + 8446613.

Almost surely, 2^135145688 is an apocalyptic number.

It is an amenable number.

135145688 is a deficient number, since it is larger than the sum of its proper divisors (118252492).

135145688 is a wasteful number, since it uses less digits than its factorization.

135145688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16893217 (or 16893213 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 135145688 is about 11625.2177614013. The cubic root of 135145688 is about 513.1772531986.

The spelling of 135145688 in words is "one hundred thirty-five million, one hundred forty-five thousand, six hundred eighty-eight".