133243335506 has 8 divisors (see below), whose sum is σ = 201633720444. Its totient is φ = 66032095360.

The previous prime is 133243335499. The next prime is 133243335529. The reversal of 133243335506 is 605533342331.

It can be written as a sum of positive squares in 2 ways, for example, as 122401319881 + 10842015625 = 349859^2 + 104125^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 133243335506.

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, 294785915 + ... + 294786366.

Almost surely, 2^133243335506 is an apocalyptic number.

133243335506 is a deficient number, since it is larger than the sum of its proper divisors (68390384938).

133243335506 is a wasteful number, since it uses less digits than its factorization.

133243335506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589572396.

The product of its (nonzero) digits is 291600, while the sum is 38.

Adding to 133243335506 its reverse (605533342331), we get a palindrome (738776677837).

The spelling of 133243335506 in words is "one hundred thirty-three billion, two hundred forty-three million, three hundred thirty-five thousand, five hundred six".