9999999999892 has 48 divisors (see below), whose sum is σ = 21052938695040. Its totient is φ = 4060091146752.

The previous prime is 9999999999863. The next prime is 9999999999971. The reversal of 9999999999892 is 2989999999999.

It is a super-9 number, since 9×9999999999892⁹ (a number of 118 digits) contains 999999999 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72398448 + ... + 72536440.

It is an arithmetic number, because the mean of its divisors is an integer number (438602889480).

Almost surely, 2^{9999999999892} is an apocalyptic number.

It is an amenable number.

9999999999892 is an abundant number, since it is smaller than the sum of its proper divisors (11052938695148).

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

9999999999892 is a wasteful number, since it uses less digits than its factorization.

9999999999892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274240 (or 274238 counting only the distinct ones).

The product of its digits is 502096953744, while the sum is 109.

Adding to 9999999999892 its sum of digits (109), we get a palindrome (10000000000001).

The spelling of 9999999999892 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred ninety-two".