990996547200 has 384 divisors, whose sum is σ = 3715658611200. Its totient is φ = 229795737600.

The previous prime is 990996547159. The next prime is 990996547201. The reversal of 990996547200 is 2745699099.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (990996547201) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2224791 + ... + 2632809.

It is an arithmetic number, because the mean of its divisors is an integer number (9676194300).

Almost surely, 2^990996547200 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 990996547200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1857829305600).

990996547200 is an abundant number, since it is smaller than the sum of its proper divisors (2724662064000).

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

990996547200 is a wasteful number, since it uses less digits than its factorization.

990996547200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408080 (or 408063 counting only the distinct ones).

The product of its (nonzero) digits is 11022480, while the sum is 60.

The spelling of 990996547200 in words is "nine hundred ninety billion, nine hundred ninety-six million, five hundred forty-seven thousand, two hundred".