135788421238 has 8 divisors (see below), whose sum is σ = 203857770888. Its totient is φ = 67835830944.

The previous prime is 135788421229. The next prime is 135788421253. The reversal of 135788421238 is 832124887531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29186931 + ... + 29191582.

It is an arithmetic number, because the mean of its divisors is an integer number (25482221361).

Almost surely, 2^135788421238 is an apocalyptic number.

135788421238 is a deficient number, since it is larger than the sum of its proper divisors (68069349650).

135788421238 is a wasteful number, since it uses less digits than its factorization.

135788421238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58379678.

The product of its digits is 2580480, while the sum is 52.

The spelling of 135788421238 in words is "one hundred thirty-five billion, seven hundred eighty-eight million, four hundred twenty-one thousand, two hundred thirty-eight".