13520222522453 has 4 divisors (see below), whose sum is σ = 13520571659340. Its totient is φ = 13519873385568.

The previous prime is 13520222522449. The next prime is 13520222522503. The reversal of 13520222522453 is 35422522202531.

13520222522453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2338033657969 + 11182188864484 = 1529063^2 + 3343978^2 .

It is a cyclic number.

It is not a de Polignac number, because 13520222522453 - 2² = 13520222522449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520222521453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174510350 + ... + 174587807.

It is an arithmetic number, because the mean of its divisors is an integer number (3380142914835).

Almost surely, 2^{13520222522453} is an apocalyptic number.

It is an amenable number.

13520222522453 is a deficient number, since it is larger than the sum of its proper divisors (349136887).

13520222522453 is an equidigital number, since it uses as much as digits as its factorization.

13520222522453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349136886.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 13520222522453 its reverse (35422522202531), we get a palindrome (48942744724984).

The spelling of 13520222522453 in words is "thirteen trillion, five hundred twenty billion, two hundred twenty-two million, five hundred twenty-two thousand, four hundred fifty-three".