990123304176 has 200 divisors, whose sum is σ = 2998224113280. Its totient is φ = 314854936704.

The previous prime is 990123304127. The next prime is 990123304193. The reversal of 990123304176 is 671403321099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11253411 + ... + 11341053.

Almost surely, 2^990123304176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990123304176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499112056640).

990123304176 is an abundant number, since it is smaller than the sum of its proper divisors (2008100809104).

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

990123304176 is a wasteful number, since it uses less digits than its factorization.

990123304176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88065 (or 88050 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 990123304176 in words is "nine hundred ninety billion, one hundred twenty-three million, three hundred four thousand, one hundred seventy-six".