4284660208021 has 2 divisors, whose sum is σ = 4284660208022. Its totient is φ = 4284660208020.

The previous prime is 4284660208009. The next prime is 4284660208117. The reversal of 4284660208021 is 1208020664824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3913156548900 + 371503659121 = 1978170^2 + 609511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4284660208021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4284660208921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2142330104010 + 2142330104011.

It is an arithmetic number, because the mean of its divisors is an integer number (2142330104011).

Almost surely, 2^{4284660208021} is an apocalyptic number.

It is an amenable number.

4284660208021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4284660208021 is an equidigital number, since it uses as much as digits as its factorization.

4284660208021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 4284660208021 in words is "four trillion, two hundred eighty-four billion, six hundred sixty million, two hundred eight thousand, twenty-one".