13530420433 has 2 divisors, whose sum is σ = 13530420434. Its totient is φ = 13530420432.

The previous prime is 13530420359. The next prime is 13530420451. The reversal of 13530420433 is 33402403531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9340835904 + 4189584529 = 96648^2 + 64727^2 .

It is a cyclic number.

It is not a de Polignac number, because 13530420433 - 2²⁹ = 12993549521 is a prime.

It is not a weakly prime, because it can be changed into another prime (13530420493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765210216 + 6765210217.

It is an arithmetic number, because the mean of its divisors is an integer number (6765210217).

Almost surely, 2^13530420433 is an apocalyptic number.

It is an amenable number.

13530420433 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530420433 is an equidigital number, since it uses as much as digits as its factorization.

13530420433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 13530420433 its reverse (33402403531), we get a palindrome (46932823964).

The spelling of 13530420433 in words is "thirteen billion, five hundred thirty million, four hundred twenty thousand, four hundred thirty-three".