9947204779368 has 256 divisors, whose sum is σ = 27473867366400. Its totient is φ = 2987553300480.

The previous prime is 9947204779363. The next prime is 9947204779373. The reversal of 9947204779368 is 8639774027499.

It is an interprime number because it is at equal distance from previous prime (9947204779363) and next prime (9947204779373).

It is a self number, because there is not a number n which added to its sum of digits gives 9947204779368.

It is not an unprimeable number, because it can be changed into a prime (9947204779363) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 497524380 + ... + 497544372.

It is an arithmetic number, because the mean of its divisors is an integer number (107319794400).

Almost surely, 2^{9947204779368} 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 9947204779368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13736933683200).

9947204779368 is an abundant number, since it is smaller than the sum of its proper divisors (17526662587032).

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

9947204779368 is a wasteful number, since it uses less digits than its factorization.

9947204779368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20472 (or 20468 counting only the distinct ones).

The product of its (nonzero) digits is 1152216576, while the sum is 75.

The spelling of 9947204779368 in words is "nine trillion, nine hundred forty-seven billion, two hundred four million, seven hundred seventy-nine thousand, three hundred sixty-eight".