4471721909198 has 4 divisors (see below), whose sum is σ = 6707582863800. Its totient is φ = 2235860954598.

The previous prime is 4471721909141. The next prime is 4471721909227. The reversal of 4471721909198 is 8919091271744.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4471721909198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1117930477298 + ... + 1117930477301.

It is an arithmetic number, because the mean of its divisors is an integer number (1676895715950).

Almost surely, 2^{4471721909198} is an apocalyptic number.

4471721909198 is a deficient number, since it is larger than the sum of its proper divisors (2235860954602).

4471721909198 is a wasteful number, since it uses less digits than its factorization.

4471721909198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235860954601.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The spelling of 4471721909198 in words is "four trillion, four hundred seventy-one billion, seven hundred twenty-one million, nine hundred nine thousand, one hundred ninety-eight".