9010989181998 has 16 divisors (see below), whose sum is σ = 20024420404560. Its totient is φ = 3003663060648.

The previous prime is 9010989181921. The next prime is 9010989182053. The reversal of 9010989181998 is 8991819890109.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83435084965 + ... + 83435085072.

It is an arithmetic number, because the mean of its divisors is an integer number (1251526275285).

Almost surely, 2^{9010989181998} is an apocalyptic number.

9010989181998 is an abundant number, since it is smaller than the sum of its proper divisors (11013431222562).

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

9010989181998 is a wasteful number, since it uses less digits than its factorization.

9010989181998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166870170048 (or 166870170042 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 72.

The spelling of 9010989181998 in words is "nine trillion, ten billion, nine hundred eighty-nine million, one hundred eighty-one thousand, nine hundred ninety-eight".