43212338453 has 2 divisors, whose sum is σ = 43212338454. Its totient is φ = 43212338452.

The previous prime is 43212338413. The next prime is 43212338483. The reversal of 43212338453 is 35483321234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30529524529 + 12682813924 = 174727^2 + 112618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43212338453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43212338413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606169226 + 21606169227.

It is an arithmetic number, because the mean of its divisors is an integer number (21606169227).

Almost surely, 2^43212338453 is an apocalyptic number.

It is an amenable number.

43212338453 is a deficient number, since it is larger than the sum of its proper divisors (1).

43212338453 is an equidigital number, since it uses as much as digits as its factorization.

43212338453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 38.

Adding to 43212338453 its reverse (35483321234), we get a palindrome (78695659687).

The spelling of 43212338453 in words is "forty-three billion, two hundred twelve million, three hundred thirty-eight thousand, four hundred fifty-three".