9971618044 has 12 divisors (see below), whose sum is σ = 17613419544. Its totient is φ = 4939212464.

The previous prime is 9971618029. The next prime is 9971618047. The reversal of 9971618044 is 4408161799.

9971618044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9971618047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11648659 + ... + 11649514.

It is an arithmetic number, because the mean of its divisors is an integer number (1467784962).

Almost surely, 2^9971618044 is an apocalyptic number.

It is an amenable number.

9971618044 is a deficient number, since it is larger than the sum of its proper divisors (7641801500).

9971618044 is a wasteful number, since it uses less digits than its factorization.

9971618044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23298284 (or 23298282 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 9971618044 is about 99857.9893849260. The cubic root of 9971618044 is about 2152.3945229959.

The spelling of 9971618044 in words is "nine billion, nine hundred seventy-one million, six hundred eighteen thousand, forty-four".