13135450015 has 4 divisors (see below), whose sum is σ = 15762540024. Its totient is φ = 10508360008.

The previous prime is 13135449947. The next prime is 13135450019. The reversal of 13135450015 is 51005453131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13135450015 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 (13135450019) 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, 1313544997 + ... + 1313545006.

It is an arithmetic number, because the mean of its divisors is an integer number (3940635006).

Almost surely, 2^13135450015 is an apocalyptic number.

13135450015 is a deficient number, since it is larger than the sum of its proper divisors (2627090009).

13135450015 is an equidigital number, since it uses as much as digits as its factorization.

13135450015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627090008.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 13135450015 in words is "thirteen billion, one hundred thirty-five million, four hundred fifty thousand, fifteen".