2004589684421 has 2 divisors, whose sum is σ = 2004589684422. Its totient is φ = 2004589684420.

The previous prime is 2004589684381. The next prime is 2004589684453. The reversal of 2004589684421 is 1244869854002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1909962696196 + 94626988225 = 1382014^2 + 307615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2004589684421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2004589614421) 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, 1002294842210 + 1002294842211.

It is an arithmetic number, because the mean of its divisors is an integer number (1002294842211).

Almost surely, 2^{2004589684421} is an apocalyptic number.

It is an amenable number.

2004589684421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004589684421 is an equidigital number, since it uses as much as digits as its factorization.

2004589684421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 2004589684421 in words is "two trillion, four billion, five hundred eighty-nine million, six hundred eighty-four thousand, four hundred twenty-one".