133775644608 has 168 divisors, whose sum is σ = 398477963520. Its totient is φ = 44498522880.

The previous prime is 133775644577. The next prime is 133775644643. The reversal of 133775644608 is 806446577331.

It is a happy number.

133775644608 is a `hidden beast` number, since 1 + 3 + 3 + 77 + 564 + 4 + 6 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7627273 + ... + 7644791.

It is an arithmetic number, because the mean of its divisors is an integer number (2371892640).

Almost surely, 2^133775644608 is an apocalyptic number.

133775644608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133775644608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199238981760).

133775644608 is an abundant number, since it is smaller than the sum of its proper divisors (264702318912).

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

133775644608 is an equidigital number, since it uses as much as digits as its factorization.

133775644608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18037 (or 18015 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 133775644608 in words is "one hundred thirty-three billion, seven hundred seventy-five million, six hundred forty-four thousand, six hundred eight".