16041611021 has 2 divisors, whose sum is σ = 16041611022. Its totient is φ = 16041611020.

The previous prime is 16041610999. The next prime is 16041611039. The reversal of 16041611021 is 12011614061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14316122500 + 1725488521 = 119650^2 + 41539^2 .

It is a cyclic number.

It is not a de Polignac number, because 16041611021 - 2³⁰ = 14967869197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16041611041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8020805510 + 8020805511.

It is an arithmetic number, because the mean of its divisors is an integer number (8020805511).

Almost surely, 2^16041611021 is an apocalyptic number.

It is an amenable number.

16041611021 is a deficient number, since it is larger than the sum of its proper divisors (1).

16041611021 is an equidigital number, since it uses as much as digits as its factorization.

16041611021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 16041611021 in words is "sixteen billion, forty-one million, six hundred eleven thousand, twenty-one".