43466679661 has 2 divisors, whose sum is σ = 43466679662. Its totient is φ = 43466679660.

The previous prime is 43466679647. The next prime is 43466679709. The reversal of 43466679661 is 16697666434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23315457636 + 20151222025 = 152694^2 + 141955^2 .

It is a cyclic number.

It is not a de Polignac number, because 43466679661 - 2⁹ = 43466679149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43466679596 and 43466679605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43466670661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21733339830 + 21733339831.

It is an arithmetic number, because the mean of its divisors is an integer number (21733339831).

Almost surely, 2^43466679661 is an apocalyptic number.

It is an amenable number.

43466679661 is a deficient number, since it is larger than the sum of its proper divisors (1).

43466679661 is an equidigital number, since it uses as much as digits as its factorization.

43466679661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 58.

The spelling of 43466679661 in words is "forty-three billion, four hundred sixty-six million, six hundred seventy-nine thousand, six hundred sixty-one".