18529603482521 has 4 divisors (see below), whose sum is σ = 18554677371600. Its totient is φ = 18504529593444.

The previous prime is 18529603482479. The next prime is 18529603482557. The reversal of 18529603482521 is 12528430692581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18529603482521 - 2⁶ = 18529603482457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18529603482581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12536943431 + ... + 12536944908.

It is an arithmetic number, because the mean of its divisors is an integer number (4638669342900).

Almost surely, 2^{18529603482521} is an apocalyptic number.

It is an amenable number.

18529603482521 is a deficient number, since it is larger than the sum of its proper divisors (25073889079).

18529603482521 is an equidigital number, since it uses as much as digits as its factorization.

18529603482521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25073889078.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 18529603482521 in words is "eighteen trillion, five hundred twenty-nine billion, six hundred three million, four hundred eighty-two thousand, five hundred twenty-one".