13405215013 has 4 divisors (see below), whose sum is σ = 13406165388. Its totient is φ = 13404264640.

The previous prime is 13405215007. The next prime is 13405215049. The reversal of 13405215013 is 31051250431.

It is a happy number.

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 5987354884 + 7417860129 = 77378^2 + 86127^2 .

It is a cyclic number.

It is not a de Polignac number, because 13405215013 - 2¹⁷ = 13405083941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13405215073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453706 + ... + 482347.

It is an arithmetic number, because the mean of its divisors is an integer number (3351541347).

Almost surely, 2^13405215013 is an apocalyptic number.

It is an amenable number.

13405215013 is a deficient number, since it is larger than the sum of its proper divisors (950375).

13405215013 is an equidigital number, since it uses as much as digits as its factorization.

13405215013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950374.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 13405215013 its reverse (31051250431), we get a palindrome (44456465444).

The spelling of 13405215013 in words is "thirteen billion, four hundred five million, two hundred fifteen thousand, thirteen".