133524533213 has 4 divisors (see below), whose sum is σ = 133722935868. Its totient is φ = 133326130560.

The previous prime is 133524533183. The next prime is 133524533239. The reversal of 133524533213 is 312335425331.

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 69625793689 + 63898739524 = 263867^2 + 252782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133524533213 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 (133524533413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99200318 + ... + 99201663.

It is an arithmetic number, because the mean of its divisors is an integer number (33430733967).

Almost surely, 2^133524533213 is an apocalyptic number.

It is an amenable number.

133524533213 is a deficient number, since it is larger than the sum of its proper divisors (198402655).

133524533213 is an equidigital number, since it uses as much as digits as its factorization.

133524533213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198402654.

The product of its digits is 97200, while the sum is 35.

Adding to 133524533213 its reverse (312335425331), we get a palindrome (445859958544).

The spelling of 133524533213 in words is "one hundred thirty-three billion, five hundred twenty-four million, five hundred thirty-three thousand, two hundred thirteen".