13056418519 has 4 divisors (see below), whose sum is σ = 13091422696. Its totient is φ = 13021414344.

The previous prime is 13056418517. The next prime is 13056418561. The reversal of 13056418519 is 91581465031.

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

It is a cyclic number.

It is not a de Polignac number, because 13056418519 - 2¹ = 13056418517 is a prime.

It is a super-2 number, since 2×13056418519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13056418517) 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, 17501529 + ... + 17502274.

It is an arithmetic number, because the mean of its divisors is an integer number (3272855674).

Almost surely, 2^13056418519 is an apocalyptic number.

13056418519 is a deficient number, since it is larger than the sum of its proper divisors (35004177).

13056418519 is an equidigital number, since it uses as much as digits as its factorization.

13056418519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35004176.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 13056418519 in words is "thirteen billion, fifty-six million, four hundred eighteen thousand, five hundred nineteen".