9999857093408 has 162 divisors, whose sum is σ = 24802658217729. Its totient is φ = 3955343438592.

The previous prime is 9999857093333. The next prime is 9999857093419. The reversal of 9999857093408 is 8043907589999.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 8550173668624 + 1449683424784 = 2924068^2 + 1204028^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2236052.

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 26 ways as a sum of consecutive naturals, for example, 1627842785 + ... + 1627848927.

Almost surely, 2^{9999857093408} is an apocalyptic number.

9999857093408 is a gapful number since it is divisible by the number (98) 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 9999857093408

9999857093408 is an abundant number, since it is smaller than the sum of its proper divisors (14802801124321).

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

9999857093408 is an frugal number, since it uses more digits than its factorization.

9999857093408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12336 (or 6165 counting only the distinct ones).

The product of its (nonzero) digits is 1587237120, while the sum is 80.

The spelling of 9999857093408 in words is "nine trillion, nine hundred ninety-nine billion, eight hundred fifty-seven million, ninety-three thousand, four hundred eight".