133168655880 has 384 divisors, whose sum is σ = 504379249920. Its totient is φ = 31354076160.

The previous prime is 133168655869. The next prime is 133168655887. The reversal of 133168655880 is 88556861331.

133168655880 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 6 + 8 + 6 + 558 + 80 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (133168655887) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2883370 + ... + 2929190.

It is an arithmetic number, because the mean of its divisors is an integer number (1313487630).

Almost surely, 2^133168655880 is an apocalyptic number.

133168655880 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 133168655880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252189624960).

133168655880 is an abundant number, since it is smaller than the sum of its proper divisors (371210594040).

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

133168655880 is a wasteful number, since it uses less digits than its factorization.

133168655880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45883 (or 45867 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 133168655880 in words is "one hundred thirty-three billion, one hundred sixty-eight million, six hundred fifty-five thousand, eight hundred eighty".