135508977 has 32 divisors (see below), whose sum is σ = 207164160. Its totient is φ = 87488640.

The previous prime is 135508949. The next prime is 135508979. The reversal of 135508977 is 779805531.

135508977 is a `hidden beast` number, since 1 + 3 + 550 + 8 + 97 + 7 = 666.

135508977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135508977 - 2⁶ = 135508913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135508979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184503 + ... + 185235.

It is an arithmetic number, because the mean of its divisors is an integer number (6473880).

Almost surely, 2^135508977 is an apocalyptic number.

It is an amenable number.

135508977 is a deficient number, since it is larger than the sum of its proper divisors (71655183).

135508977 is a wasteful number, since it uses less digits than its factorization.

135508977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The square root of 135508977 is about 11640.8323156036. The cubic root of 135508977 is about 513.6366706173.

The spelling of 135508977 in words is "one hundred thirty-five million, five hundred eight thousand, nine hundred seventy-seven".