10000000009998 has 24 divisors (see below), whose sum is σ = 21666751631928. Its totient is φ = 3333320268432.

The previous prime is 10000000009969. The next prime is 10000000010047. The reversal of 10000000009998 is 89990000000001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4369165 + ... + 6252167.

It is an arithmetic number, because the mean of its divisors is an integer number (902781317997).

Almost surely, 2^{10000000009998} is an apocalyptic number.

10000000009998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10000000009998 is an abundant number, since it is smaller than the sum of its proper divisors (11666751621930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10000000009998 is a wasteful number, since it uses less digits than its factorization.

10000000009998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178048 (or 2178045 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

Adding to 10000000009998 its reverse (89990000000001), we get a palindrome (99990000009999).

The spelling of 10000000009998 in words is "ten trillion, nine thousand, nine hundred ninety-eight".