21104414153 has 2 divisors, whose sum is σ = 21104414154. Its totient is φ = 21104414152.

The previous prime is 21104414119. The next prime is 21104414189. The reversal of 21104414153 is 35141440112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17480012944 + 3624401209 = 132212^2 + 60203^2 .

It is a cyclic number.

It is not a de Polignac number, because 21104414153 - 2¹⁸ = 21104152009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (21104414953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10552207076 + 10552207077.

It is an arithmetic number, because the mean of its divisors is an integer number (10552207077).

Almost surely, 2^21104414153 is an apocalyptic number.

It is an amenable number.

21104414153 is a deficient number, since it is larger than the sum of its proper divisors (1).

21104414153 is an equidigital number, since it uses as much as digits as its factorization.

21104414153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 21104414153 its reverse (35141440112), we get a palindrome (56245854265).

The spelling of 21104414153 in words is "twenty-one billion, one hundred four million, four hundred fourteen thousand, one hundred fifty-three".