133244442413 has 4 divisors (see below), whose sum is σ = 133282202940. Its totient is φ = 133206681888.

The previous prime is 133244442403. The next prime is 133244442433. The reversal of 133244442413 is 314244442331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314244442331 = 71 ⋅4425978061.

It can be written as a sum of positive squares in 2 ways, for example, as 55170023689 + 78074418724 = 234883^2 + 279418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133244442413 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 (133244442403) 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 3 ways as a sum of consecutive naturals, for example, 18874970 + ... + 18882027.

It is an arithmetic number, because the mean of its divisors is an integer number (33320550735).

Almost surely, 2^133244442413 is an apocalyptic number.

It is an amenable number.

133244442413 is a deficient number, since it is larger than the sum of its proper divisors (37760527).

133244442413 is an equidigital number, since it uses as much as digits as its factorization.

133244442413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37760526.

The product of its digits is 110592, while the sum is 35.

Adding to 133244442413 its reverse (314244442331), we get a palindrome (447488884744).

The spelling of 133244442413 in words is "one hundred thirty-three billion, two hundred forty-four million, four hundred forty-two thousand, four hundred thirteen".