133333405606 has 4 divisors (see below), whose sum is σ = 200000108412. Its totient is φ = 66666702802.

The previous prime is 133333405591. The next prime is 133333405613. The reversal of 133333405606 is 606504333331.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×133333405606² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33333351400 + ... + 33333351403.

It is an arithmetic number, because the mean of its divisors is an integer number (50000027103).

Almost surely, 2^133333405606 is an apocalyptic number.

133333405606 is a deficient number, since it is larger than the sum of its proper divisors (66666702806).

133333405606 is an equidigital number, since it uses as much as digits as its factorization.

133333405606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66666702805.

The product of its (nonzero) digits is 174960, while the sum is 37.

Adding to 133333405606 its reverse (606504333331), we get a palindrome (739837738937).

The spelling of 133333405606 in words is "one hundred thirty-three billion, three hundred thirty-three million, four hundred five thousand, six hundred six".