9901980099 has 54 divisors (see below), whose sum is σ = 15936105276. Its totient is φ = 5875787520.

The previous prime is 9901980097. The next prime is 9901980133. The reversal of 9901980099 is 9900891099.

It is not a de Polignac number, because 9901980099 - 2¹ = 9901980097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9901980091) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 72277159 + ... + 72277295.

Almost surely, 2^9901980099 is an apocalyptic number.

9901980099 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9901980099 is a deficient number, since it is larger than the sum of its proper divisors (6034125177).

9901980099 is a wasteful number, since it uses less digits than its factorization.

9901980099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 54.

The square root of 9901980099 is about 99508.6935850331. The cubic root of 9901980099 is about 2147.3723152445.

The spelling of 9901980099 in words is "nine billion, nine hundred one million, nine hundred eighty thousand, ninety-nine".