999994000000 has 224 divisors, whose sum is σ = 2598576112800. Its totient is φ = 382588800000.

The previous prime is 999993999997. The next prime is 999994000037. The reversal of 999994000000 is 499999.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 999993999899 and 999993999908.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 45989131 + ... + 46010869.

Almost surely, 2^999994000000 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 999994000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299288056400).

999994000000 is an abundant number, since it is smaller than the sum of its proper divisors (1598582112800).

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

999994000000 is an frugal number, since it uses more digits than its factorization.

999994000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21806 (or 21769 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 49.

Adding to 999994000000 its reverse (499999), we get a palindrome (999994499999).

The spelling of 999994000000 in words is "nine hundred ninety-nine billion, nine hundred ninety-four million", and thus it is an aban number.