133500016004021 has 16 divisors (see below), whose sum is σ = 134320252281600. Its totient is φ = 132681295676160.

The previous prime is 133500016004009. The next prime is 133500016004027. The reversal of 133500016004021 is 120400610005331.

It is a cyclic number.

It is not a de Polignac number, because 133500016004021 - 2⁶ = 133500016003957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133500016004027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3790335191 + ... + 3790370411.

It is an arithmetic number, because the mean of its divisors is an integer number (8395015767600).

Almost surely, 2^{133500016004021} is an apocalyptic number.

It is an amenable number.

133500016004021 is a deficient number, since it is larger than the sum of its proper divisors (820236277579).

133500016004021 is a wasteful number, since it uses less digits than its factorization.

133500016004021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56084.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 133500016004021 its reverse (120400610005331), we get a palindrome (253900626009352).

The spelling of 133500016004021 in words is "one hundred thirty-three trillion, five hundred billion, sixteen million, four thousand, twenty-one".