13318486726447 has 16 divisors (see below), whose sum is σ = 15243179477760. Its totient is φ = 11399318106048.

The previous prime is 13318486726439. The next prime is 13318486726469. The reversal of 13318486726447 is 74462768481331.

It is a cyclic number.

It is not a de Polignac number, because 13318486726447 - 2³ = 13318486726439 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 (13318486726147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13872204 + ... + 14801182.

It is an arithmetic number, because the mean of its divisors is an integer number (952698717360).

Almost surely, 2^{13318486726447} is an apocalyptic number.

13318486726447 is a deficient number, since it is larger than the sum of its proper divisors (1924692751313).

13318486726447 is a wasteful number, since it uses less digits than its factorization.

13318486726447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931950.

The product of its digits is 130056192, while the sum is 64.

The spelling of 13318486726447 in words is "thirteen trillion, three hundred eighteen billion, four hundred eighty-six million, seven hundred twenty-six thousand, four hundred forty-seven".