99728459040 has 384 divisors, whose sum is σ = 368922677760. Its totient is φ = 22170009600.

The previous prime is 99728458979. The next prime is 99728459087. The reversal of 99728459040 is 4095482799.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53587710 + ... + 53589570.

It is an arithmetic number, because the mean of its divisors is an integer number (960736140).

Almost surely, 2^99728459040 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 99728459040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184461338880).

99728459040 is an abundant number, since it is smaller than the sum of its proper divisors (269194218720).

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

99728459040 is a wasteful number, since it uses less digits than its factorization.

99728459040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316 (or 2308 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 99728459040 in words is "ninety-nine billion, seven hundred twenty-eight million, four hundred fifty-nine thousand, forty".