133659025920 has 480 divisors, whose sum is σ = 541358243712. Its totient is φ = 29838606336.

The previous prime is 133659025873. The next prime is 133659025933. The reversal of 133659025920 is 29520956331.

133659025920 is a `hidden beast` number, since 1 + 3 + 3 + 6 + 59 + 0 + 2 + 592 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 6925404 + ... + 6944676.

Almost surely, 2^133659025920 is an apocalyptic number.

133659025920 is a gapful number since it is divisible by the number (10) 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 133659025920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270679121856).

133659025920 is an abundant number, since it is smaller than the sum of its proper divisors (407699217792).

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

133659025920 is a wasteful number, since it uses less digits than its factorization.

133659025920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19352 (or 19333 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The spelling of 133659025920 in words is "one hundred thirty-three billion, six hundred fifty-nine million, twenty-five thousand, nine hundred twenty".