990108911000 has 64 divisors (see below), whose sum is σ = 2527478048160. Its totient is φ = 360039600000.

The previous prime is 990108910997. The next prime is 990108911009. The reversal of 990108911000 is 119801099.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990108911009) 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, 44993951 + ... + 45015950.

Almost surely, 2^990108911000 is an apocalyptic number.

It is an amenable number.

990108911000 is an abundant number, since it is smaller than the sum of its proper divisors (1537369137160).

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

990108911000 is a wasteful number, since it uses less digits than its factorization.

990108911000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90009933 (or 90009919 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 990108911000 in words is "nine hundred ninety billion, one hundred eight million, nine hundred eleven thousand".