13053423521 has 2 divisors, whose sum is σ = 13053423522. Its totient is φ = 13053423520.

The previous prime is 13053423469. The next prime is 13053423563. The reversal of 13053423521 is 12532435031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10979896225 + 2073527296 = 104785^2 + 45536^2 .

It is a cyclic number.

It is not a de Polignac number, because 13053423521 - 2⁶ = 13053423457 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 (13053423221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6526711760 + 6526711761.

It is an arithmetic number, because the mean of its divisors is an integer number (6526711761).

Almost surely, 2^13053423521 is an apocalyptic number.

It is an amenable number.

13053423521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13053423521 is an equidigital number, since it uses as much as digits as its factorization.

13053423521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 13053423521 its reverse (12532435031), we get a palindrome (25585858552).

The spelling of 13053423521 in words is "thirteen billion, fifty-three million, four hundred twenty-three thousand, five hundred twenty-one".