9999999999992 has 16 divisors (see below), whose sum is σ = 18770183006400. Its totient is φ = 4994617864960.

The previous prime is 9999999999971. The next prime is 10000000000037. The reversal of 9999999999992 is 2999999999999.

It is a super-9 number, since 9×9999999999992⁹ (a number of 118 digits) contains 999999999 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672758984 + ... + 672773847.

It is an arithmetic number, because the mean of its divisors is an integer number (1173136437900).

Almost surely, 2^{9999999999992} is an apocalyptic number.

It is an amenable number.

9999999999992 is a deficient number, since it is larger than the sum of its proper divisors (8770183006408).

9999999999992 is a wasteful number, since it uses less digits than its factorization.

9999999999992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345533766 (or 1345533762 counting only the distinct ones).

The product of its digits is 564859072962, while the sum is 110.

It can be divided in two parts, 999999999999 and 2, that added together give a palindrome (1000000000001).

The spelling of 9999999999992 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-two".