13521504539 has 2 divisors, whose sum is σ = 13521504540. Its totient is φ = 13521504538.

The previous prime is 13521504511. The next prime is 13521504559. The reversal of 13521504539 is 93540512531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13521504539 - 2¹⁶ = 13521439003 is a prime.

It is not a weakly prime, because it can be changed into another prime (13521504559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760752269 + 6760752270.

It is an arithmetic number, because the mean of its divisors is an integer number (6760752270).

Almost surely, 2^13521504539 is an apocalyptic number.

13521504539 is a deficient number, since it is larger than the sum of its proper divisors (1).

13521504539 is an equidigital number, since it uses as much as digits as its factorization.

13521504539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 13521504539 in words is "thirteen billion, five hundred twenty-one million, five hundred four thousand, five hundred thirty-nine".