99418605840 has 120 divisors (see below), whose sum is σ = 348397433280. Its totient is φ = 25358944512.

The previous prime is 99418605829. The next prime is 99418605859. The reversal of 99418605840 is 4850681499.

99418605840 is a `hidden beast` number, since 99 + 418 + 60 + 5 + 84 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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 23 ways as a sum of consecutive naturals, for example, 2985210 + ... + 3018329.

It is an arithmetic number, because the mean of its divisors is an integer number (2903311944).

Almost surely, 2^99418605840 is an apocalyptic number.

99418605840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99418605840 is an abundant number, since it is smaller than the sum of its proper divisors (248978827440).

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

99418605840 is a wasteful number, since it uses less digits than its factorization.

99418605840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003581 (or 6003572 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 99418605840 in words is "ninety-nine billion, four hundred eighteen million, six hundred five thousand, eight hundred forty".