9878647915824 has 20 divisors (see below), whose sum is σ = 25519840449336. Its totient is φ = 3292882638592.

The previous prime is 9878647915751. The next prime is 9878647915847. The reversal of 9878647915824 is 4285197468789.

It is a self number, because there is not a number n which added to its sum of digits gives 9878647915824.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102902582409 + ... + 102902582504.

Almost surely, 2^{9878647915824} is an apocalyptic number.

It is an amenable number.

9878647915824 is an abundant number, since it is smaller than the sum of its proper divisors (15641192533512).

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

9878647915824 is a wasteful number, since it uses less digits than its factorization.

9878647915824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205805164924 (or 205805164918 counting only the distinct ones).

The product of its digits is 1950842880, while the sum is 78.

The spelling of 9878647915824 in words is "nine trillion, eight hundred seventy-eight billion, six hundred forty-seven million, nine hundred fifteen thousand, eight hundred twenty-four".