133681608238 has 32 divisors (see below), whose sum is σ = 217290638880. Its totient is φ = 61452610560.

The previous prime is 133681608217. The next prime is 133681608253. The reversal of 133681608238 is 832806186331.

It is a junction number, because it is equal to n+sod(n) for n = 133681608191 and 133681608200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14973 + ... + 517288.

It is an arithmetic number, because the mean of its divisors is an integer number (6790332465).

Almost surely, 2^133681608238 is an apocalyptic number.

133681608238 is a deficient number, since it is larger than the sum of its proper divisors (83609030642).

133681608238 is a wasteful number, since it uses less digits than its factorization.

133681608238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532452.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 133681608238 in words is "one hundred thirty-three billion, six hundred eighty-one million, six hundred eight thousand, two hundred thirty-eight".