2108921810193 has 96 divisors (see below), whose sum is σ = 3739785154560. Its totient is φ = 1128570693120.

The previous prime is 2108921810189. The next prime is 2108921810239. The reversal of 2108921810193 is 3910181298012.

It is not a de Polignac number, because 2108921810193 - 2² = 2108921810189 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2108921810113) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 2973480 + ... + 3613782.

It is an arithmetic number, because the mean of its divisors is an integer number (38956095360).

Almost surely, 2^{2108921810193} is an apocalyptic number.

It is an amenable number.

2108921810193 is a deficient number, since it is larger than the sum of its proper divisors (1630863344367).

2108921810193 is a wasteful number, since it uses less digits than its factorization.

2108921810193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640459 (or 640456 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The spelling of 2108921810193 in words is "two trillion, one hundred eight billion, nine hundred twenty-one million, eight hundred ten thousand, one hundred ninety-three".