99010820909808 has 80 divisors (see below), whose sum is σ = 284224578775200. Its totient is φ = 33000488663040.

The previous prime is 99010820909719. The next prime is 99010820909837. The reversal of 99010820909808 is 80890902801099.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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, 6247713 + ... + 15396608.

It is an arithmetic number, because the mean of its divisors is an integer number (3552807234690).

Almost surely, 2^{99010820909808} is an apocalyptic number.

It is an amenable number.

99010820909808 is an abundant number, since it is smaller than the sum of its proper divisors (185213757865392).

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

99010820909808 is a wasteful number, since it uses less digits than its factorization.

99010820909808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21654927 (or 21654915 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 63.

The spelling of 99010820909808 in words is "ninety-nine trillion, ten billion, eight hundred twenty million, nine hundred nine thousand, eight hundred eight".