99166384565824 has 63 divisors (see below), whose sum is σ = 197576109159793. Its totient is φ = 49384226807552.

The previous prime is 99166384565783. The next prime is 99166384565891. The reversal of 99166384565824 is 42856548366199.

The square root of 99166384565824 is 9958232.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 17618838350400 + 81547546215424 = 4197480^2 + 9030368^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20952117762 + ... + 20952122494.

Almost surely, 2^{99166384565824} is an apocalyptic number.

99166384565824 is the 9958232-nd square number.

It is an amenable number.

99166384565824 is a deficient number, since it is larger than the sum of its proper divisors (98409724593969).

99166384565824 is an frugal number, since it uses more digits than its factorization.

99166384565824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10004 (or 4998 counting only the distinct ones).

The product of its digits is 2687385600, while the sum is 76.

The spelling of 99166384565824 in words is "ninety-nine trillion, one hundred sixty-six billion, three hundred eighty-four million, five hundred sixty-five thousand, eight hundred twenty-four".