20200910910091 has 4 divisors (see below), whose sum is σ = 20202090680232. Its totient is φ = 20199731139952.

The previous prime is 20200910910053. The next prime is 20200910910127. The reversal of 20200910910091 is 19001901900202.

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

It is a cyclic number.

It is not a de Polignac number, because 20200910910091 - 2⁹ = 20200910909579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20200910910491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589859386 + ... + 589893631.

It is an arithmetic number, because the mean of its divisors is an integer number (5050522670058).

Almost surely, 2^{20200910910091} is an apocalyptic number.

20200910910091 is a deficient number, since it is larger than the sum of its proper divisors (1179770141).

20200910910091 is a wasteful number, since it uses less digits than its factorization.

20200910910091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179770140.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 20200910910091 in words is "twenty trillion, two hundred billion, nine hundred ten million, nine hundred ten thousand, ninety-one".