133330005621 has 6 divisors (see below), whose sum is σ = 192587785910. Its totient is φ = 88886670408.

The previous prime is 133330005593. The next prime is 133330005647. The reversal of 133330005621 is 126500033331.

It is a happy number.

133330005621 is a `hidden beast` number, since 1 + 3 + 3 + 3 + 30 + 0 + 0 + 5 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 103638924900 + 29691080721 = 321930^2 + 172311^2 .

It is not a de Polignac number, because 133330005621 - 2²² = 133325811317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133330005121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7407222526 + ... + 7407222543.

Almost surely, 2^133330005621 is an apocalyptic number.

It is an amenable number.

133330005621 is a deficient number, since it is larger than the sum of its proper divisors (59257780289).

133330005621 is a wasteful number, since it uses less digits than its factorization.

133330005621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14814445075 (or 14814445072 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

Adding to 133330005621 its reverse (126500033331), we get a palindrome (259830038952).

The spelling of 133330005621 in words is "one hundred thirty-three billion, three hundred thirty million, five thousand, six hundred twenty-one".