133561936989808 has 40 divisors (see below), whose sum is σ = 259501482435888. Its totient is φ = 66593855910912.

The previous prime is 133561936989769. The next prime is 133561936989853. The reversal of 133561936989808 is 808989639165331.

133561936989808 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48020691 + ... + 50725837.

Almost surely, 2^{133561936989808} is an apocalyptic number.

It is an amenable number.

133561936989808 is a deficient number, since it is larger than the sum of its proper divisors (125939545446080).

133561936989808 is a wasteful number, since it uses less digits than its factorization.

133561936989808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713801 (or 2713795 counting only the distinct ones).

The product of its (nonzero) digits is 1813985280, while the sum is 79.

The spelling of 133561936989808 in words is "one hundred thirty-three trillion, five hundred sixty-one billion, nine hundred thirty-six million, nine hundred eighty-nine thousand, eight hundred eight".