133611229538 has 8 divisors (see below), whose sum is σ = 201125031888. Its totient is φ = 66569552244.

The previous prime is 133611229529. The next prime is 133611229541. The reversal of 133611229538 is 835922116331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×133611229538² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118030556 + ... + 118031687.

It is an arithmetic number, because the mean of its divisors is an integer number (25140628986).

Almost surely, 2^133611229538 is an apocalyptic number.

133611229538 is a deficient number, since it is larger than the sum of its proper divisors (67513802350).

133611229538 is a wasteful number, since it uses less digits than its factorization.

133611229538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236062528.

The product of its digits is 233280, while the sum is 44.

The spelling of 133611229538 in words is "one hundred thirty-three billion, six hundred eleven million, two hundred twenty-nine thousand, five hundred thirty-eight".