99816042720 has 48 divisors (see below), whose sum is σ = 314420536080. Its totient is φ = 26617611264.

The previous prime is 99816042713. The next prime is 99816042721. The reversal of 99816042720 is 2724061899.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 99816042720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99816042721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103974565 + ... + 103975524.

It is an arithmetic number, because the mean of its divisors is an integer number (6550427835).

Almost surely, 2^99816042720 is an apocalyptic number.

It is an amenable number.

99816042720 is an abundant number, since it is smaller than the sum of its proper divisors (214604493360).

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

99816042720 is a wasteful number, since it uses less digits than its factorization.

99816042720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207950107 (or 207950099 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 99816042720 in words is "ninety-nine billion, eight hundred sixteen million, forty-two thousand, seven hundred twenty".