9966512998 has 32 divisors (see below), whose sum is σ = 16691472000. Its totient is φ = 4431563136.

The previous prime is 9966512993. The next prime is 9966513013. The reversal of 9966512998 is 8992156699.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9966512993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334828 + ... + 363376.

It is an arithmetic number, because the mean of its divisors is an integer number (521608500).

Almost surely, 2^9966512998 is an apocalyptic number.

9966512998 is a deficient number, since it is larger than the sum of its proper divisors (6724959002).

9966512998 is a wasteful number, since it uses less digits than its factorization.

9966512998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29056.

The product of its digits is 18895680, while the sum is 64.

The square root of 9966512998 is about 99832.4245823971. The cubic root of 9966512998 is about 2152.0271486915.

The spelling of 9966512998 in words is "nine billion, nine hundred sixty-six million, five hundred twelve thousand, nine hundred ninety-eight".