99309728736 has 72 divisors (see below), whose sum is σ = 284635862784. Its totient is φ = 32842575360.

The previous prime is 99309728729. The next prime is 99309728743. The reversal of 99309728736 is 63782790399.

It is an interprime number because it is at equal distance from previous prime (99309728729) and next prime (99309728743).

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 1321005 + ... + 1394156.

It is an arithmetic number, because the mean of its divisors is an integer number (3953275872).

Almost surely, 2^99309728736 is an apocalyptic number.

99309728736 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

99309728736 is an abundant number, since it is smaller than the sum of its proper divisors (185326134048).

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

99309728736 is a wasteful number, since it uses less digits than its factorization.

99309728736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715304 (or 2715293 counting only the distinct ones).

The product of its (nonzero) digits is 30862944, while the sum is 63.

The spelling of 99309728736 in words is "ninety-nine billion, three hundred nine million, seven hundred twenty-eight thousand, seven hundred thirty-six".