43664666132 has 6 divisors (see below), whose sum is σ = 76413165738. Its totient is φ = 21832333064.

The previous prime is 43664666131. The next prime is 43664666237. The reversal of 43664666132 is 23166646634.

43664666132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35693033476 + 7971632656 = 188926^2 + 89284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43664666131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5458083263 + ... + 5458083270.

It is an arithmetic number, because the mean of its divisors is an integer number (12735527623).

Almost surely, 2^43664666132 is an apocalyptic number.

It is an amenable number.

43664666132 is a deficient number, since it is larger than the sum of its proper divisors (32748499606).

43664666132 is a wasteful number, since it uses less digits than its factorization.

43664666132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916166537 (or 10916166535 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 47.

The spelling of 43664666132 in words is "forty-three billion, six hundred sixty-four million, six hundred sixty-six thousand, one hundred thirty-two".