99999000810 has 48 divisors (see below), whose sum is σ = 260064863136. Its totient is φ = 26659481184.

The previous prime is 99999000799. The next prime is 99999000811. The reversal of 99999000810 is 1800099999.

It is a super-2 number, since 2×99999000810² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99999000811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209437 + ... + 493823.

It is an arithmetic number, because the mean of its divisors is an integer number (5418017982).

Almost surely, 2^99999000810 is an apocalyptic number.

99999000810 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99999000810 is an abundant number, since it is smaller than the sum of its proper divisors (160065862326).

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

99999000810 is a wasteful number, since it uses less digits than its factorization.

99999000810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288307 (or 288304 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 54.

The spelling of 99999000810 in words is "ninety-nine billion, nine hundred ninety-nine million, eight hundred ten", and thus it is an aban number.