9969818880004 has 27 divisors (see below), whose sum is σ = 17518186798357. Its totient is φ = 4964704584704.

The previous prime is 9969818879953. The next prime is 9969818880029. The reversal of 9969818880004 is 4000888189699.

The square root of 9969818880004 is 3157502.

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., 9815250384900 + 154568495104 = 3132930^2 + 393152^2 .

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, 1622952957 + ... + 1622959099.

Almost surely, 2^{9969818880004} is an apocalyptic number.

9969818880004 is the 3157502-nd square number.

It is an amenable number.

9969818880004 is a deficient number, since it is larger than the sum of its proper divisors (7548367918353).

9969818880004 is an frugal number, since it uses more digits than its factorization.

9969818880004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804 (or 6402 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 70.

The spelling of 9969818880004 in words is "nine trillion, nine hundred sixty-nine billion, eight hundred eighteen million, eight hundred eighty thousand, four".