9878189717803 has 8 divisors (see below), whose sum is σ = 10777454170416. Its totient is φ = 8979133132800.

The previous prime is 9878189717779. The next prime is 9878189717813. The reversal of 9878189717803 is 3087179818789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9878189717803 - 2¹⁷ = 9878189586731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9878189717803.

It is not an unprimeable number, because it can be changed into a prime (9878189717813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51867526 + ... + 52057627.

It is an arithmetic number, because the mean of its divisors is an integer number (1347181771302).

Almost surely, 2^{9878189717803} is an apocalyptic number.

9878189717803 is a deficient number, since it is larger than the sum of its proper divisors (899264452613).

9878189717803 is a wasteful number, since it uses less digits than its factorization.

9878189717803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103933805.

The product of its (nonzero) digits is 341397504, while the sum is 76.

The spelling of 9878189717803 in words is "nine trillion, eight hundred seventy-eight billion, one hundred eighty-nine million, seven hundred seventeen thousand, eight hundred three".