99143232480 has 144 divisors (see below), whose sum is σ = 338921607024. Its totient is φ = 26391674880.

The previous prime is 99143232479. The next prime is 99143232497. The reversal of 99143232480 is 8423234199.

99143232480 is a `hidden beast` number, since 9 + 9 + 143 + 23 + 2 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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, 761952 + ... + 882528.

It is an arithmetic number, because the mean of its divisors is an integer number (2353622271).

Almost surely, 2^99143232480 is an apocalyptic number.

99143232480 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99143232480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169460803512).

99143232480 is an abundant number, since it is smaller than the sum of its proper divisors (239778374544).

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

99143232480 is a wasteful number, since it uses less digits than its factorization.

99143232480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121169 (or 121158 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 99143232480 in words is "ninety-nine billion, one hundred forty-three million, two hundred thirty-two thousand, four hundred eighty".