135123333828 has 48 divisors (see below), whose sum is σ = 379293573120. Its totient is φ = 36574736544.

The previous prime is 135123333827. The next prime is 135123333833. The reversal of 135123333828 is 828333321531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 135123333828.

It is not an unprimeable number, because it can be changed into a prime (135123333827) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 42330276 + ... + 42333467.

It is an arithmetic number, because the mean of its divisors is an integer number (7901949440).

Almost surely, 2^135123333828 is an apocalyptic number.

It is an amenable number.

135123333828 is an abundant number, since it is smaller than the sum of its proper divisors (244170239292).

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

135123333828 is a wasteful number, since it uses less digits than its factorization.

135123333828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84663776 (or 84663774 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The spelling of 135123333828 in words is "one hundred thirty-five billion, one hundred twenty-three million, three hundred thirty-three thousand, eight hundred twenty-eight".