16978102847999 has 8 divisors (see below), whose sum is σ = 17971529040000. Its totient is φ = 15994660839192.

The previous prime is 16978102847989. The next prime is 16978102848011. The reversal of 16978102847999 is 99974820187961.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16978102847999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16978102847989) 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, 2496042299 + ... + 2496049100.

It is an arithmetic number, because the mean of its divisors is an integer number (2246441130000).

Almost surely, 2^{16978102847999} is an apocalyptic number.

16978102847999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16978102847999 is a deficient number, since it is larger than the sum of its proper divisors (993426192001).

16978102847999 is a wasteful number, since it uses less digits than its factorization.

16978102847999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992091597.

The product of its (nonzero) digits is 987614208, while the sum is 80.

The spelling of 16978102847999 in words is "sixteen trillion, nine hundred seventy-eight billion, one hundred two million, eight hundred forty-seven thousand, nine hundred ninety-nine".