9999553032 has 112 divisors (see below), whose sum is σ = 32126855040. Its totient is φ = 2857003488.

The previous prime is 9999553019. The next prime is 9999553033. The reversal of 9999553032 is 2303559999.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 9999553032.

It is not an unprimeable number, because it can be changed into a prime (9999553033) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 81648 + ... + 163295.

It is an arithmetic number, because the mean of its divisors is an integer number (286846920).

Almost surely, 2^9999553032 is an apocalyptic number.

9999553032 is the 81648-th pentagonal number.

It is an amenable number.

9999553032 is an abundant number, since it is smaller than the sum of its proper divisors (22127302008).

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

9999553032 is a wasteful number, since it uses less digits than its factorization.

9999553032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244974 (or 244955 counting only the distinct ones).

The product of its (nonzero) digits is 2952450, while the sum is 54.

The square root of 9999553032 is about 99997.7651350269. The cubic root of 9999553032 is about 2154.4025907748.

The spelling of 9999553032 in words is "nine billion, nine hundred ninety-nine million, five hundred fifty-three thousand, thirty-two".