135961968 has 40 divisors (see below), whose sum is σ = 355477248. Its totient is φ = 44773312.

The previous prime is 135961933. The next prime is 135961979. The reversal of 135961968 is 869169531.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13080 + ... + 21047.

Almost surely, 2^135961968 is an apocalyptic number.

It is an amenable number.

135961968 is an abundant number, since it is smaller than the sum of its proper divisors (219515280).

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

135961968 is a wasteful number, since it uses less digits than its factorization.

135961968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34221 (or 34215 counting only the distinct ones).

The product of its digits is 349920, while the sum is 48.

The square root of 135961968 is about 11660.2730671284. The cubic root of 135961968 is about 514.2083769069.

The spelling of 135961968 in words is "one hundred thirty-five million, nine hundred sixty-one thousand, nine hundred sixty-eight".