43664326676 has 6 divisors (see below), whose sum is σ = 76412571690. Its totient is φ = 21832163336.

The previous prime is 43664326649. The next prime is 43664326679. The reversal of 43664326676 is 67662346634.

It can be written as a sum of positive squares in only one way, i.e., 43589088400 + 75238276 = 208780^2 + 8674^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43664326679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5458040831 + ... + 5458040838.

It is an arithmetic number, because the mean of its divisors is an integer number (12735428615).

Almost surely, 2^43664326676 is an apocalyptic number.

It is an amenable number.

43664326676 is a deficient number, since it is larger than the sum of its proper divisors (32748245014).

43664326676 is a wasteful number, since it uses less digits than its factorization.

43664326676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916081673 (or 10916081671 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 53.

The spelling of 43664326676 in words is "forty-three billion, six hundred sixty-four million, three hundred twenty-six thousand, six hundred seventy-six".