999992000000 has 420 divisors, whose sum is σ = 2906401703832. Its totient is φ = 342720000000.

The previous prime is 999991999997. The next prime is 999992000039. The reversal of 999992000000 is 299999.

It is a happy number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 391998725 + ... + 392001275.

Almost surely, 2^999992000000 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 999992000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1453200851916).

999992000000 is an abundant number, since it is smaller than the sum of its proper divisors (1906409703832).

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

999992000000 is an frugal number, since it uses more digits than its factorization.

999992000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 47.

Adding to 999992000000 its reverse (299999), we get a palindrome (999992299999).

The spelling of 999992000000 in words is "nine hundred ninety-nine billion, nine hundred ninety-two million", and thus it is an aban number.