990802387008 has 448 divisors, whose sum is σ = 3449092416000. Its totient is φ = 272895049728.

The previous prime is 990802386983. The next prime is 990802387009. The reversal of 990802387008 is 800783208099.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (990802387009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 269751060 + ... + 269754732.

It is an arithmetic number, because the mean of its divisors is an integer number (7698867000).

Almost surely, 2^990802387008 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 990802387008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1724546208000).

990802387008 is an abundant number, since it is smaller than the sum of its proper divisors (2458290028992).

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

990802387008 is a wasteful number, since it uses less digits than its factorization.

990802387008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499 (or 4483 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 990802387008 in words is "nine hundred ninety billion, eight hundred two million, three hundred eighty-seven thousand, eight".