43317856012664 has 8 divisors (see below), whose sum is σ = 81220980023760. Its totient is φ = 21658928006328.

The previous prime is 43317856012661. The next prime is 43317856012687. The reversal of 43317856012664 is 46621065871334.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43317856012661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2707366000784 + ... + 2707366000799.

It is an arithmetic number, because the mean of its divisors is an integer number (10152622502970).

Almost surely, 2^{43317856012664} is an apocalyptic number.

It is an amenable number.

43317856012664 is a deficient number, since it is larger than the sum of its proper divisors (37903124011096).

43317856012664 is a wasteful number, since it uses less digits than its factorization.

43317856012664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5414732001589 (or 5414732001585 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 43317856012664 in words is "forty-three trillion, three hundred seventeen billion, eight hundred fifty-six million, twelve thousand, six hundred sixty-four".