133021330331405 has 4 divisors (see below), whose sum is σ = 159625596397692. Its totient is φ = 106417064265120.

The previous prime is 133021330331353. The next prime is 133021330331423. The reversal of 133021330331405 is 504133033120331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24809344886404 + 108211985445001 = 4980898^2 + 10402499^2 .

It is not a de Polignac number, because 133021330331405 - 2¹² = 133021330327309 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 13302133033136 + ... + 13302133033145.

It is an arithmetic number, because the mean of its divisors is an integer number (39906399099423).

Almost surely, 2^{133021330331405} is an apocalyptic number.

It is an amenable number.

133021330331405 is a deficient number, since it is larger than the sum of its proper divisors (26604266066287).

133021330331405 is an equidigital number, since it uses as much as digits as its factorization.

133021330331405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26604266066286.

The product of its (nonzero) digits is 29160, while the sum is 32.

Adding to 133021330331405 its reverse (504133033120331), we get a palindrome (637154363451736).

The spelling of 133021330331405 in words is "one hundred thirty-three trillion, twenty-one billion, three hundred thirty million, three hundred thirty-one thousand, four hundred five".