13325443015505 has 4 divisors (see below), whose sum is σ = 15990531618612. Its totient is φ = 10660354412400.

The previous prime is 13325443015481. The next prime is 13325443015517. The reversal of 13325443015505 is 50551034452331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9044400626881 + 4281042388624 = 3007391^2 + 2069068^2 .

It is not a de Polignac number, because 13325443015505 - 2¹² = 13325443011409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332544301546 + ... + 1332544301555.

It is an arithmetic number, because the mean of its divisors is an integer number (3997632904653).

Almost surely, 2^{13325443015505} is an apocalyptic number.

It is an amenable number.

13325443015505 is a deficient number, since it is larger than the sum of its proper divisors (2665088603107).

13325443015505 is an equidigital number, since it uses as much as digits as its factorization.

13325443015505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665088603106.

The product of its (nonzero) digits is 540000, while the sum is 41.

Adding to 13325443015505 its reverse (50551034452331), we get a palindrome (63876477467836).

The spelling of 13325443015505 in words is "thirteen trillion, three hundred twenty-five billion, four hundred forty-three million, fifteen thousand, five hundred five".