9211971433648 has 40 divisors (see below), whose sum is σ = 17946999921168. Its totient is φ = 4580504420352.

The previous prime is 9211971433627. The next prime is 9211971433667. The reversal of 9211971433648 is 8463341791129.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9211971433592 and 9211971433601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8254536 + ... + 9303832.

Almost surely, 2^{9211971433648} is an apocalyptic number.

It is an amenable number.

9211971433648 is a deficient number, since it is larger than the sum of its proper divisors (8735028487520).

9211971433648 is a wasteful number, since it uses less digits than its factorization.

9211971433648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052341 (or 1052335 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 58.

The spelling of 9211971433648 in words is "nine trillion, two hundred eleven billion, nine hundred seventy-one million, four hundred thirty-three thousand, six hundred forty-eight".