999993000000 has 196 divisors, whose sum is σ = 3307236104336. Its totient is φ = 266664000000.

The previous prime is 999992999987. The next prime is 999993000037. The reversal of 999993000000 is 399999.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nialpdrome in base 10.

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, 2833335 + ... + 3166665.

Almost surely, 2^999993000000 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 999993000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653618052168).

999993000000 is an abundant number, since it is smaller than the sum of its proper divisors (2307243104336).

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

999993000000 is an frugal number, since it uses more digits than its factorization.

999993000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333376 (or 333341 counting only the distinct ones).

The product of its (nonzero) digits is 177147, while the sum is 48.

Adding to 999993000000 its reverse (399999), we get a palindrome (999993399999).

The spelling of 999993000000 in words is "nine hundred ninety-nine billion, nine hundred ninety-three million", and thus it is an aban number.