133216388568 has 96 divisors (see below), whose sum is σ = 380662354800. Its totient is φ = 41970991104.

The previous prime is 133216388531. The next prime is 133216388611. The reversal of 133216388568 is 865883612331.

133216388568 is a `hidden beast` number, since 1 + 3 + 32 + 16 + 38 + 8 + 568 = 666.

It is a super-2 number, since 2×133216388568² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 479896 + ... + 704792.

Almost surely, 2^133216388568 is an apocalyptic number.

133216388568 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 133216388568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190331177400).

133216388568 is an abundant number, since it is smaller than the sum of its proper divisors (247445966232).

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

133216388568 is a wasteful number, since it uses less digits than its factorization.

133216388568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225361 (or 225354 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 133216388568 in words is "one hundred thirty-three billion, two hundred sixteen million, three hundred eighty-eight thousand, five hundred sixty-eight".