13146489505 has 4 divisors (see below), whose sum is σ = 15775787412. Its totient is φ = 10517191600.

The previous prime is 13146489493. The next prime is 13146489533. The reversal of 13146489505 is 50598464131.

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 7562215521 + 5584273984 = 86961^2 + 74728^2 .

It is not a de Polignac number, because 13146489505 - 2²¹ = 13144392353 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, 1314648946 + ... + 1314648955.

It is an arithmetic number, because the mean of its divisors is an integer number (3943946853).

Almost surely, 2^13146489505 is an apocalyptic number.

It is an amenable number.

13146489505 is a deficient number, since it is larger than the sum of its proper divisors (2629297907).

13146489505 is an equidigital number, since it uses as much as digits as its factorization.

13146489505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629297906.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 13146489505 in words is "thirteen billion, one hundred forty-six million, four hundred eighty-nine thousand, five hundred five".