21013440033163 has 2 divisors, whose sum is σ = 21013440033164. Its totient is φ = 21013440033162.

The previous prime is 21013440033037. The next prime is 21013440033191. The reversal of 21013440033163 is 36133004431012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21013440033163 - 2²¹ = 21013437936011 is a prime.

It is not a weakly prime, because it can be changed into another prime (21013440033763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506720016581 + 10506720016582.

It is an arithmetic number, because the mean of its divisors is an integer number (10506720016582).

Almost surely, 2^{21013440033163} is an apocalyptic number.

21013440033163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21013440033163 is an equidigital number, since it uses as much as digits as its factorization.

21013440033163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 21013440033163 its reverse (36133004431012), we get a palindrome (57146444464175).

The spelling of 21013440033163 in words is "twenty-one trillion, thirteen billion, four hundred forty million, thirty-three thousand, one hundred sixty-three".