20212004539 has 2 divisors, whose sum is σ = 20212004540. Its totient is φ = 20212004538.

The previous prime is 20212004441. The next prime is 20212004543. The reversal of 20212004539 is 93540021202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212004539 - 2⁹ = 20212004027 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212002539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106002269 + 10106002270.

It is an arithmetic number, because the mean of its divisors is an integer number (10106002270).

Almost surely, 2^20212004539 is an apocalyptic number.

20212004539 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212004539 is an equidigital number, since it uses as much as digits as its factorization.

20212004539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 20212004539 in words is "twenty billion, two hundred twelve million, four thousand, five hundred thirty-nine".