13530544457 has 2 divisors, whose sum is σ = 13530544458. Its totient is φ = 13530544456.

The previous prime is 13530544441. The next prime is 13530544483. The reversal of 13530544457 is 75444503531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12914958736 + 615585721 = 113644^2 + 24811^2 .

It is a cyclic number.

It is not a de Polignac number, because 13530544457 - 2⁴ = 13530544441 is a prime.

It is a weakly prime.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765272228 + 6765272229.

It is an arithmetic number, because the mean of its divisors is an integer number (6765272229).

Almost surely, 2^13530544457 is an apocalyptic number.

It is an amenable number.

13530544457 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530544457 is an equidigital number, since it uses as much as digits as its factorization.

13530544457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504000, while the sum is 41.

The spelling of 13530544457 in words is "thirteen billion, five hundred thirty million, five hundred forty-four thousand, four hundred fifty-seven".