996091904640 has 1024 divisors, whose sum is σ = 3891901685760. Its totient is φ = 211789873152.

The previous prime is 996091904629. The next prime is 996091904641. The reversal of 996091904640 is 46409190699.

It is not an unprimeable number, because it can be changed into a prime (996091904641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2670487494 + ... + 2670487866.

It is an arithmetic number, because the mean of its divisors is an integer number (3800685240).

Almost surely, 2^996091904640 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 996091904640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1945950842880).

996091904640 is an abundant number, since it is smaller than the sum of its proper divisors (2895809781120).

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

996091904640 is a wasteful number, since it uses less digits than its factorization.

996091904640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 57.

The spelling of 996091904640 in words is "nine hundred ninety-six billion, ninety-one million, nine hundred four thousand, six hundred forty".