133681608216 has 48 divisors (see below), whose sum is σ = 389904693360. Its totient is φ = 41132802240.

The previous prime is 133681608209. The next prime is 133681608217. The reversal of 133681608216 is 612806186331.

133681608216 is a `hidden beast` number, since 1 + 3 + 36 + 8 + 1 + 608 + 2 + 1 + 6 = 666.

It is a super-2 number, since 2×133681608216² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133681608217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71410180 + ... + 71412051.

It is an arithmetic number, because the mean of its divisors is an integer number (8123014445).

Almost surely, 2^133681608216 is an apocalyptic number.

It is an amenable number.

133681608216 is an abundant number, since it is smaller than the sum of its proper divisors (256223085144).

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

133681608216 is a wasteful number, since it uses less digits than its factorization.

133681608216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142822256 (or 142822249 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 133681608216 in words is "one hundred thirty-three billion, six hundred eighty-one million, six hundred eight thousand, two hundred sixteen".