43826689664 has 32 divisors (see below), whose sum is σ = 87321131040. Its totient is φ = 21910798080.

The previous prime is 43826689637. The next prime is 43826689679. The reversal of 43826689664 is 46698662834.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 43826689597 and 43826689606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1597019 + ... + 1624229.

It is an arithmetic number, because the mean of its divisors is an integer number (2728785345).

Almost surely, 2^43826689664 is an apocalyptic number.

It is an amenable number.

43826689664 is a deficient number, since it is larger than the sum of its proper divisors (43494441376).

43826689664 is a wasteful number, since it uses less digits than its factorization.

43826689664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39808 (or 39796 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 62.

The spelling of 43826689664 in words is "forty-three billion, eight hundred twenty-six million, six hundred eighty-nine thousand, six hundred sixty-four".