43413234401021 has 2 divisors, whose sum is σ = 43413234401022. Its totient is φ = 43413234401020.

The previous prime is 43413234400979. The next prime is 43413234401051. The reversal of 43413234401021 is 12010443231434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40312518417796 + 3100715983225 = 6349214^2 + 1760885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43413234401021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43413234401051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21706617200510 + 21706617200511.

It is an arithmetic number, because the mean of its divisors is an integer number (21706617200511).

Almost surely, 2^{43413234401021} is an apocalyptic number.

It is an amenable number.

43413234401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

43413234401021 is an equidigital number, since it uses as much as digits as its factorization.

43413234401021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 43413234401021 its reverse (12010443231434), we get a palindrome (55423677632455).

The spelling of 43413234401021 in words is "forty-three trillion, four hundred thirteen billion, two hundred thirty-four million, four hundred one thousand, twenty-one".