43435234961 has 2 divisors, whose sum is σ = 43435234962. Its totient is φ = 43435234960.

The previous prime is 43435234939. The next prime is 43435235009. The reversal of 43435234961 is 16943253434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43174606225 + 260628736 = 207785^2 + 16144^2 .

It is a cyclic number.

It is not a de Polignac number, because 43435234961 - 2⁶ = 43435234897 is a prime.

It is a super-2 number, since 2×43435234961² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (43435234061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21717617480 + 21717617481.

It is an arithmetic number, because the mean of its divisors is an integer number (21717617481).

Almost surely, 2^43435234961 is an apocalyptic number.

It is an amenable number.

43435234961 is a deficient number, since it is larger than the sum of its proper divisors (1).

43435234961 is an equidigital number, since it uses as much as digits as its factorization.

43435234961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 44.

The spelling of 43435234961 in words is "forty-three billion, four hundred thirty-five million, two hundred thirty-four thousand, nine hundred sixty-one".