135383978448 has 80 divisors (see below), whose sum is σ = 388702621440. Its totient is φ = 45116326656.

The previous prime is 135383978423. The next prime is 135383978453. The reversal of 135383978448 is 844879383531.

135383978448 is a `hidden beast` number, since 1 + 3 + 538 + 3 + 97 + 8 + 4 + 4 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1721065 + ... + 1798007.

It is an arithmetic number, because the mean of its divisors is an integer number (4858782768).

Almost surely, 2^135383978448 is an apocalyptic number.

135383978448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

135383978448 is an abundant number, since it is smaller than the sum of its proper divisors (253318642992).

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

135383978448 is a wasteful number, since it uses less digits than its factorization.

135383978448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81033 (or 81021 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 135383978448 in words is "one hundred thirty-five billion, three hundred eighty-three million, nine hundred seventy-eight thousand, four hundred forty-eight".