13143220505 has 8 divisors (see below), whose sum is σ = 16280634624. Its totient is φ = 10175396400.

The previous prime is 13143220499. The next prime is 13143220507. The reversal of 13143220505 is 50502234131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13143220505 - 2³² = 8848253209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13143220507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42397331 + ... + 42397640.

It is an arithmetic number, because the mean of its divisors is an integer number (2035079328).

Almost surely, 2^13143220505 is an apocalyptic number.

It is an amenable number.

13143220505 is a deficient number, since it is larger than the sum of its proper divisors (3137414119).

13143220505 is an equidigital number, since it uses as much as digits as its factorization.

13143220505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84795007.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 13143220505 its reverse (50502234131), we get a palindrome (63645454636).

The spelling of 13143220505 in words is "thirteen billion, one hundred forty-three million, two hundred twenty thousand, five hundred five".