21152165036603 has 2 divisors, whose sum is σ = 21152165036604. Its totient is φ = 21152165036602.

The previous prime is 21152165036543. The next prime is 21152165036641. The reversal of 21152165036603 is 30663056125112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21152165036603 - 2⁸ = 21152165036347 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21152165036003) 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, 10576082518301 + 10576082518302.

It is an arithmetic number, because the mean of its divisors is an integer number (10576082518302).

Almost surely, 2^{21152165036603} is an apocalyptic number.

21152165036603 is a deficient number, since it is larger than the sum of its proper divisors (1).

21152165036603 is an equidigital number, since it uses as much as digits as its factorization.

21152165036603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 21152165036603 in words is "twenty-one trillion, one hundred fifty-two billion, one hundred sixty-five million, thirty-six thousand, six hundred three".