198750006668 has 6 divisors (see below), whose sum is σ = 347812511676. Its totient is φ = 99375003332.

The previous prime is 198750006649. The next prime is 198750006779. The reversal of 198750006668 is 866600057891.

It is a happy number.

198750006668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24843750830 + ... + 24843750837.

It is an arithmetic number, because the mean of its divisors is an integer number (57968751946).

Almost surely, 2^198750006668 is an apocalyptic number.

It is an amenable number.

198750006668 is a deficient number, since it is larger than the sum of its proper divisors (149062505008).

198750006668 is a wasteful number, since it uses less digits than its factorization.

198750006668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49687501671 (or 49687501669 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 198750006668 in words is "one hundred ninety-eight billion, seven hundred fifty million, six thousand, six hundred sixty-eight".