4021611366389 has 2 divisors, whose sum is σ = 4021611366390. Its totient is φ = 4021611366388.

The previous prime is 4021611366359. The next prime is 4021611366431. The reversal of 4021611366389 is 9836631161204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2679818110225 + 1341793256164 = 1637015^2 + 1158358^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021611366389 - 2⁸ = 4021611366133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021611366329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010805683194 + 2010805683195.

It is an arithmetic number, because the mean of its divisors is an integer number (2010805683195).

Almost surely, 2^{4021611366389} is an apocalyptic number.

It is an amenable number.

4021611366389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021611366389 is an equidigital number, since it uses as much as digits as its factorization.

4021611366389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 4021611366389 in words is "four trillion, twenty-one billion, six hundred eleven million, three hundred sixty-six thousand, three hundred eighty-nine".