198479757766 has 16 divisors (see below), whose sum is σ = 301972285440. Its totient is φ = 97822879560.

The previous prime is 198479757719. The next prime is 198479757829. The reversal of 198479757766 is 667757974891.

It is a happy number.

198479757766 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 198479757692 and 198479757701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600475 + ... + 870361.

It is an arithmetic number, because the mean of its divisors is an integer number (18873267840).

Almost surely, 2^198479757766 is an apocalyptic number.

198479757766 is a deficient number, since it is larger than the sum of its proper divisors (103492527674).

198479757766 is a wasteful number, since it uses less digits than its factorization.

198479757766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275139.

The product of its digits is 1120210560, while the sum is 76.

The spelling of 198479757766 in words is "one hundred ninety-eight billion, four hundred seventy-nine million, seven hundred fifty-seven thousand, seven hundred sixty-six".