9999389607480 has 2048 divisors, whose sum is σ = 43745122713600. Its totient is φ = 1975228416000.

The previous prime is 9999389607451. The next prime is 9999389607497. The reversal of 9999389607480 is 847069839999.

9999389607480 is a `hidden beast` number, since 9 + 9 + 99 + 389 + 6 + 0 + 74 + 80 = 666.

It is a super-3 number, since 3×9999389607480³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9999389607480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 16637919180 + ... + 16637919780.

It is an arithmetic number, because the mean of its divisors is an integer number (21359923200).

Almost surely, 2^{9999389607480} is an apocalyptic number.

9999389607480 is a gapful number since it is divisible by the number (90) 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 9999389607480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21872561356800).

9999389607480 is an abundant number, since it is smaller than the sum of its proper divisors (33745733106120).

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

9999389607480 is a wasteful number, since it uses less digits than its factorization.

9999389607480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 1904684544, while the sum is 81.

The spelling of 9999389607480 in words is "nine trillion, nine hundred ninety-nine billion, three hundred eighty-nine million, six hundred seven thousand, four hundred eighty".