999941497800 has 192 divisors, whose sum is σ = 3561200640000. Its totient is φ = 227361235200.

The previous prime is 999941497699. The next prime is 999941497813. The reversal of 999941497800 is 8794149999.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 178951 + ... + 1425449.

It is an arithmetic number, because the mean of its divisors is an integer number (18547920000).

Almost surely, 2^999941497800 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 999941497800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1780600320000).

999941497800 is an abundant number, since it is smaller than the sum of its proper divisors (2561259142200).

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

999941497800 is a wasteful number, since it uses less digits than its factorization.

999941497800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246716 (or 1246707 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 69.

The spelling of 999941497800 in words is "nine hundred ninety-nine billion, nine hundred forty-one million, four hundred ninety-seven thousand, eight hundred".