43668006901 has 2 divisors, whose sum is σ = 43668006902. Its totient is φ = 43668006900.

The previous prime is 43668006841. The next prime is 43668006923. The reversal of 43668006901 is 10960086634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33187366276 + 10480640625 = 182174^2 + 102375^2 .

It is a cyclic number.

It is not a de Polignac number, because 43668006901 - 2¹⁷ = 43667875829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43668006961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21834003450 + 21834003451.

It is an arithmetic number, because the mean of its divisors is an integer number (21834003451).

Almost surely, 2^43668006901 is an apocalyptic number.

It is an amenable number.

43668006901 is a deficient number, since it is larger than the sum of its proper divisors (1).

43668006901 is an equidigital number, since it uses as much as digits as its factorization.

43668006901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 43668006901 in words is "forty-three billion, six hundred sixty-eight million, six thousand, nine hundred one".