133681613234 has 16 divisors (see below), whose sum is σ = 217240325568. Its totient is φ = 61329747792.

The previous prime is 133681613213. The next prime is 133681613243. The reversal of 133681613234 is 432316186331.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133681613191 and 133681613200.

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, 15389672 + ... + 15398355.

It is an arithmetic number, because the mean of its divisors is an integer number (13577520348).

Almost surely, 2^133681613234 is an apocalyptic number.

133681613234 is a deficient number, since it is larger than the sum of its proper divisors (83558712334).

133681613234 is a wasteful number, since it uses less digits than its factorization.

133681613234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30788209.

The product of its digits is 186624, while the sum is 41.

Adding to 133681613234 its reverse (432316186331), we get a palindrome (565997799565).

The spelling of 133681613234 in words is "one hundred thirty-three billion, six hundred eighty-one million, six hundred thirteen thousand, two hundred thirty-four".