13574996521 has 4 divisors (see below), whose sum is σ = 13746832000. Its totient is φ = 13403161044.

The previous prime is 13574996509. The next prime is 13574996531. The reversal of 13574996521 is 12569947531.

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 13574996521 - 2²⁹ = 13038125609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13574996531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85917621 + ... + 85917778.

It is an arithmetic number, because the mean of its divisors is an integer number (3436708000).

Almost surely, 2^13574996521 is an apocalyptic number.

It is an amenable number.

13574996521 is a deficient number, since it is larger than the sum of its proper divisors (171835479).

13574996521 is an equidigital number, since it uses as much as digits as its factorization.

13574996521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171835478.

The product of its digits is 2041200, while the sum is 52.

The spelling of 13574996521 in words is "thirteen billion, five hundred seventy-four million, nine hundred ninety-six thousand, five hundred twenty-one".