21163523153219 has 2 divisors, whose sum is σ = 21163523153220. Its totient is φ = 21163523153218.

The previous prime is 21163523153173. The next prime is 21163523153257. The reversal of 21163523153219 is 91235132536112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21163523153219 - 2¹⁶ = 21163523087683 is a prime.

It is a super-2 number, since 2×21163523153219² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21163523153219.

It is not a weakly prime, because it can be changed into another prime (21163523153299) 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, 10581761576609 + 10581761576610.

It is an arithmetic number, because the mean of its divisors is an integer number (10581761576610).

Almost surely, 2^{21163523153219} is an apocalyptic number.

21163523153219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21163523153219 is an equidigital number, since it uses as much as digits as its factorization.

21163523153219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 44.

The spelling of 21163523153219 in words is "twenty-one trillion, one hundred sixty-three billion, five hundred twenty-three million, one hundred fifty-three thousand, two hundred nineteen".