43012441261 has 2 divisors, whose sum is σ = 43012441262. Its totient is φ = 43012441260.

The previous prime is 43012441231. The next prime is 43012441271. The reversal of 43012441261 is 16214421034.

43012441261 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., 21617820900 + 21394620361 = 147030^2 + 146269^2 .

It is a cyclic number.

It is not a de Polignac number, because 43012441261 - 2¹³ = 43012433069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43012441211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21506220630 + 21506220631.

It is an arithmetic number, because the mean of its divisors is an integer number (21506220631).

Almost surely, 2^43012441261 is an apocalyptic number.

It is an amenable number.

43012441261 is a deficient number, since it is larger than the sum of its proper divisors (1).

43012441261 is an equidigital number, since it uses as much as digits as its factorization.

43012441261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 43012441261 its reverse (16214421034), we get a palindrome (59226862295).

The spelling of 43012441261 in words is "forty-three billion, twelve million, four hundred forty-one thousand, two hundred sixty-one".