9879446216640 has 4032 divisors, whose sum is σ = 45962373058560. Its totient is φ = 1778053939200.

The previous prime is 9879446216593. The next prime is 9879446216669. The reversal of 9879446216640 is 466126449789.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 135334879644 + ... + 135334879716.

It is an arithmetic number, because the mean of its divisors is an integer number (11399398080).

Almost surely, 2^{9879446216640} 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 9879446216640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22981186529280).

9879446216640 is an abundant number, since it is smaller than the sum of its proper divisors (36082926841920).

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

9879446216640 is a wasteful number, since it uses less digits than its factorization.

9879446216640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 66.

The spelling of 9879446216640 in words is "nine trillion, eight hundred seventy-nine billion, four hundred forty-six million, two hundred sixteen thousand, six hundred forty".