202100961589 has 2 divisors, whose sum is σ = 202100961590. Its totient is φ = 202100961588.

The previous prime is 202100961581. The next prime is 202100961611. The reversal of 202100961589 is 985169001202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188905844689 + 13195116900 = 434633^2 + 114870^2 .

It is a cyclic number.

It is not a de Polignac number, because 202100961589 - 2³ = 202100961581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202100961581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050480794 + 101050480795.

It is an arithmetic number, because the mean of its divisors is an integer number (101050480795).

Almost surely, 2^202100961589 is an apocalyptic number.

It is an amenable number.

202100961589 is a deficient number, since it is larger than the sum of its proper divisors (1).

202100961589 is an equidigital number, since it uses as much as digits as its factorization.

202100961589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 202100961589 in words is "two hundred two billion, one hundred million, nine hundred sixty-one thousand, five hundred eighty-nine".