16197955868 has 12 divisors (see below), whose sum is σ = 28347313680. Its totient is φ = 8098723392.

The previous prime is 16197955849. The next prime is 16197955871. The reversal of 16197955868 is 86855979161.

16197955868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 221705 + ... + 285567.

It is an arithmetic number, because the mean of its divisors is an integer number (2362276140).

Almost surely, 2^16197955868 is an apocalyptic number.

It is an amenable number.

16197955868 is a deficient number, since it is larger than the sum of its proper divisors (12149357812).

16197955868 is a wasteful number, since it uses less digits than its factorization.

16197955868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127276 (or 127274 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 65.

The spelling of 16197955868 in words is "sixteen billion, one hundred ninety-seven million, nine hundred fifty-five thousand, eight hundred sixty-eight".