43212420481 has 2 divisors, whose sum is σ = 43212420482. Its totient is φ = 43212420480.

The previous prime is 43212420469. The next prime is 43212420521. The reversal of 43212420481 is 18402421234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37875387456 + 5337033025 = 194616^2 + 73055^2 .

It is a cyclic number.

It is not a de Polignac number, because 43212420481 - 2¹³ = 43212412289 is a prime.

It is a super-2 number, since 2×43212420481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43212420781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606210240 + 21606210241.

It is an arithmetic number, because the mean of its divisors is an integer number (21606210241).

Almost surely, 2^43212420481 is an apocalyptic number.

It is an amenable number.

43212420481 is a deficient number, since it is larger than the sum of its proper divisors (1).

43212420481 is an equidigital number, since it uses as much as digits as its factorization.

43212420481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 31.

The spelling of 43212420481 in words is "forty-three billion, two hundred twelve million, four hundred twenty thousand, four hundred eighty-one".