13530344437 has 2 divisors, whose sum is σ = 13530344438. Its totient is φ = 13530344436.

The previous prime is 13530344431. The next prime is 13530344447. The reversal of 13530344437 is 73444303531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13435359921 + 94984516 = 115911^2 + 9746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13530344437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13530344396 and 13530344405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13530344431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765172218 + 6765172219.

It is an arithmetic number, because the mean of its divisors is an integer number (6765172219).

Almost surely, 2^13530344437 is an apocalyptic number.

It is an amenable number.

13530344437 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530344437 is an equidigital number, since it uses as much as digits as its factorization.

13530344437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 37.

Adding to 13530344437 its reverse (73444303531), we get a palindrome (86974647968).

The spelling of 13530344437 in words is "thirteen billion, five hundred thirty million, three hundred forty-four thousand, four hundred thirty-seven".