43541533213 has 2 divisors, whose sum is σ = 43541533214. Its totient is φ = 43541533212.

The previous prime is 43541533193. The next prime is 43541533241. The reversal of 43541533213 is 31233514534.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38807818009 + 4733715204 = 196997^2 + 68802^2 .

It is a cyclic number.

It is not a de Polignac number, because 43541533213 - 2²⁵ = 43507978781 is a prime.

It is a super-2 number, since 2×43541533213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43541533283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21770766606 + 21770766607.

It is an arithmetic number, because the mean of its divisors is an integer number (21770766607).

Almost surely, 2^43541533213 is an apocalyptic number.

It is an amenable number.

43541533213 is a deficient number, since it is larger than the sum of its proper divisors (1).

43541533213 is an equidigital number, since it uses as much as digits as its factorization.

43541533213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 34.

The spelling of 43541533213 in words is "forty-three billion, five hundred forty-one million, five hundred thirty-three thousand, two hundred thirteen".