990323063280 has 480 divisors, whose sum is σ = 3576530033856. Its totient is φ = 244679049216.

The previous prime is 990323063243. The next prime is 990323063351. The reversal of 990323063280 is 82360323099.

990323063280 is a `hidden beast` number, since 9 + 9 + 0 + 3 + 2 + 3 + 0 + 632 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 851523979 + ... + 851525141.

Almost surely, 2^990323063280 is an apocalyptic number.

990323063280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990323063280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788265016928).

990323063280 is an abundant number, since it is smaller than the sum of its proper divisors (2586206970576).

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

990323063280 is a wasteful number, since it uses less digits than its factorization.

990323063280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 990323063280 in words is "nine hundred ninety billion, three hundred twenty-three million, sixty-three thousand, two hundred eighty".