990448865450 has 96 divisors (see below), whose sum is σ = 2097913260672. Its totient is φ = 344368640000.

The previous prime is 990448865389. The next prime is 990448865489. The reversal of 990448865450 is 54568844099.

990448865450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35418674 + ... + 35446626.

It is an arithmetic number, because the mean of its divisors is an integer number (21853263132).

Almost surely, 2^990448865450 is an apocalyptic number.

990448865450 is an abundant number, since it is smaller than the sum of its proper divisors (1107464395222).

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

990448865450 is a wasteful number, since it uses less digits than its factorization.

990448865450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30800 (or 30795 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 62.

The spelling of 990448865450 in words is "nine hundred ninety billion, four hundred forty-eight million, eight hundred sixty-five thousand, four hundred fifty".