21441410153 has 2 divisors, whose sum is σ = 21441410154. Its totient is φ = 21441410152.

The previous prime is 21441410141. The next prime is 21441410167. The reversal of 21441410153 is 35101414412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17931084649 + 3510325504 = 133907^2 + 59248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21441410153 is a prime.

It is not a weakly prime, because it can be changed into another prime (21441460153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10720705076 + 10720705077.

It is an arithmetic number, because the mean of its divisors is an integer number (10720705077).

Almost surely, 2^21441410153 is an apocalyptic number.

It is an amenable number.

21441410153 is a deficient number, since it is larger than the sum of its proper divisors (1).

21441410153 is an equidigital number, since it uses as much as digits as its factorization.

21441410153 is an evil number, because the sum of its binary digits is even.

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

Adding to 21441410153 its reverse (35101414412), we get a palindrome (56542824565).

The spelling of 21441410153 in words is "twenty-one billion, four hundred forty-one million, four hundred ten thousand, one hundred fifty-three".