99431433500 has 96 divisors (see below), whose sum is σ = 252249938304. Its totient is φ = 33531840000.

The previous prime is 99431433473. The next prime is 99431433527. The reversal of 99431433500 is 533413499.

It is an interprime number because it is at equal distance from previous prime (99431433473) and next prime (99431433527).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19361 + ... + 446360.

It is an arithmetic number, because the mean of its divisors is an integer number (2627603524).

Almost surely, 2^99431433500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99431433500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126124969152).

99431433500 is an abundant number, since it is smaller than the sum of its proper divisors (152818504804).

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

99431433500 is a wasteful number, since it uses less digits than its factorization.

99431433500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465808 (or 465796 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 41.

Adding to 99431433500 its reverse (533413499), we get a palindrome (99964846999).

The spelling of 99431433500 in words is "ninety-nine billion, four hundred thirty-one million, four hundred thirty-three thousand, five hundred".