135178968 has 64 divisors (see below), whose sum is σ = 366599520. Its totient is φ = 41369600.

The previous prime is 135178963. The next prime is 135178969. The reversal of 135178968 is 869871531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135178963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12688 + ... + 20768.

Almost surely, 2^135178968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135178968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183299760).

135178968 is an abundant number, since it is smaller than the sum of its proper divisors (231420552).

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

135178968 is a wasteful number, since it uses less digits than its factorization.

135178968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8148 (or 8144 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 135178968 is about 11626.6490443292. The cubic root of 135178968 is about 513.2193735147.

The spelling of 135178968 in words is "one hundred thirty-five million, one hundred seventy-eight thousand, nine hundred sixty-eight".