11985798498 has 8 divisors (see below), whose sum is σ = 23971597008. Its totient is φ = 3995266164.

The previous prime is 11985798497. The next prime is 11985798521. The reversal of 11985798498 is 89489758911.

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

11985798498 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11985798497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998816536 + ... + 998816547.

It is an arithmetic number, because the mean of its divisors is an integer number (2996449626).

Almost surely, 2^11985798498 is an apocalyptic number.

11985798498 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11985798498 is a wasteful number, since it uses less digits than its factorization.

11985798498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997633088.

The product of its digits is 52254720, while the sum is 69.

The spelling of 11985798498 in words is "eleven billion, nine hundred eighty-five million, seven hundred ninety-eight thousand, four hundred ninety-eight".