133156240433 has 4 divisors (see below), whose sum is σ = 136755057780. Its totient is φ = 129557423088.

The previous prime is 133156240403. The next prime is 133156240447. The reversal of 133156240433 is 334042651331.

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 125296176784 + 7860063649 = 353972^2 + 88657^2 .

It is a cyclic number.

It is not a de Polignac number, because 133156240433 - 2¹⁶ = 133156174897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133156240393 and 133156240402.

It is not an unprimeable number, because it can be changed into a prime (133156240403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1799408618 + ... + 1799408691.

It is an arithmetic number, because the mean of its divisors is an integer number (34188764445).

Almost surely, 2^133156240433 is an apocalyptic number.

It is an amenable number.

133156240433 is a deficient number, since it is larger than the sum of its proper divisors (3598817347).

133156240433 is an equidigital number, since it uses as much as digits as its factorization.

133156240433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598817346.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 133156240433 its reverse (334042651331), we get a palindrome (467198891764).

The spelling of 133156240433 in words is "one hundred thirty-three billion, one hundred fifty-six million, two hundred forty thousand, four hundred thirty-three".