202009101091 has 8 divisors (see below), whose sum is σ = 233789918720. Its totient is φ = 170958877128.

The previous prime is 202009101043. The next prime is 202009101163. The reversal of 202009101091 is 190101900202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202009101091 - 2¹⁷ = 202008970019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202009101191) 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 7 ways as a sum of consecutive naturals, for example, 182647821 + ... + 182648926.

It is an arithmetic number, because the mean of its divisors is an integer number (29223739840).

Almost surely, 2^202009101091 is an apocalyptic number.

202009101091 is a deficient number, since it is larger than the sum of its proper divisors (31780817629).

202009101091 is an equidigital number, since it uses as much as digits as its factorization.

202009101091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365296833.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 202009101091 in words is "two hundred two billion, nine million, one hundred one thousand, ninety-one".