99798979098847 has 8 divisors (see below), whose sum is σ = 114499773687456. Its totient is φ = 85209133903872.

The previous prime is 99798979098769. The next prime is 99798979098851. The reversal of 99798979098847 is 74889097989799.

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 99798979098847 - 2¹¹ = 99798979096799 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 (99798979090847) 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, 27737346478 + ... + 27737350075.

It is an arithmetic number, because the mean of its divisors is an integer number (14312471710932).

Almost surely, 2^{99798979098847} is an apocalyptic number.

99798979098847 is a deficient number, since it is larger than the sum of its proper divisors (14700794588609).

99798979098847 is a wasteful number, since it uses less digits than its factorization.

99798979098847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55474696817.

The product of its (nonzero) digits is 373318170624, while the sum is 103.

The spelling of 99798979098847 in words is "ninety-nine trillion, seven hundred ninety-eight billion, nine hundred seventy-nine million, ninety-eight thousand, eight hundred forty-seven".