135771812 has 24 divisors (see below), whose sum is σ = 265232352. Its totient is φ = 60278400.

The previous prime is 135771799. The next prime is 135771821. The reversal of 135771812 is 218177531.

It is a happy number.

135771812 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33989 + ... + 37772.

It is an arithmetic number, because the mean of its divisors is an integer number (11051348).

Almost surely, 2^135771812 is an apocalyptic number.

It is an amenable number.

135771812 is a deficient number, since it is larger than the sum of its proper divisors (129460540).

135771812 is a wasteful number, since it uses less digits than its factorization.

135771812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71819 (or 71817 counting only the distinct ones).

The product of its digits is 11760, while the sum is 35.

The square root of 135771812 is about 11652.1162026475. The cubic root of 135771812 is about 513.9685416307.

The spelling of 135771812 in words is "one hundred thirty-five million, seven hundred seventy-one thousand, eight hundred twelve".