43143522901 has 2 divisors, whose sum is σ = 43143522902. Its totient is φ = 43143522900.

The previous prime is 43143522871. The next prime is 43143522911. The reversal of 43143522901 is 10922534134.

43143522901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30985152676 + 12158370225 = 176026^2 + 110265^2 .

It is a cyclic number.

It is not a de Polignac number, because 43143522901 - 2⁵ = 43143522869 is a prime.

It is a super-2 number, since 2×43143522901² (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 (43143522911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571761450 + 21571761451.

It is an arithmetic number, because the mean of its divisors is an integer number (21571761451).

Almost surely, 2^43143522901 is an apocalyptic number.

It is an amenable number.

43143522901 is a deficient number, since it is larger than the sum of its proper divisors (1).

43143522901 is an equidigital number, since it uses as much as digits as its factorization.

43143522901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 43143522901 in words is "forty-three billion, one hundred forty-three million, five hundred twenty-two thousand, nine hundred one".