202109959867 has 2 divisors, whose sum is σ = 202109959868. Its totient is φ = 202109959866.

The previous prime is 202109959853. The next prime is 202109959879. The reversal of 202109959867 is 768959901202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202109959867 - 2⁷ = 202109959739 is a prime.

It is not a weakly prime, because it can be changed into another prime (202109959847) 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 as a sum of consecutive naturals, namely, 101054979933 + 101054979934.

It is an arithmetic number, because the mean of its divisors is an integer number (101054979934).

Almost surely, 2^202109959867 is an apocalyptic number.

202109959867 is a deficient number, since it is larger than the sum of its proper divisors (1).

202109959867 is an equidigital number, since it uses as much as digits as its factorization.

202109959867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 202109959867 in words is "two hundred two billion, one hundred nine million, nine hundred fifty-nine thousand, eight hundred sixty-seven".