9866772992 has 20 divisors (see below), whose sum is σ = 19714275966. Its totient is φ = 4933386240.

The previous prime is 9866772983. The next prime is 9866773003. The reversal of 9866772992 is 2992776689.

It can be written as a sum of positive squares in only one way, i.e., 9685709056 + 181063936 = 98416^2 + 13456^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9635009 + ... + 9636032.

Almost surely, 2^9866772992 is an apocalyptic number.

It is an amenable number.

9866772992 is a deficient number, since it is larger than the sum of its proper divisors (9847502974).

9866772992 is an equidigital number, since it uses as much as digits as its factorization.

9866772992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19271059 (or 19271043 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 65.

The square root of 9866772992 is about 99331.6313769184. The cubic root of 9866772992 is about 2144.8242542513.

The spelling of 9866772992 in words is "nine billion, eight hundred sixty-six million, seven hundred seventy-two thousand, nine hundred ninety-two".