13581313064047 has 4 divisors (see below), whose sum is σ = 13767358448560. Its totient is φ = 13395267679536.

The previous prime is 13581313064029. The next prime is 13581313064063. The reversal of 13581313064047 is 74046031318531.

It is a happy number.

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 13581313064047 - 2⁷ = 13581313063919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13581313063988 and 13581313064006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13581313068047) 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, 93022692147 + ... + 93022692292.

It is an arithmetic number, because the mean of its divisors is an integer number (3441839612140).

Almost surely, 2^{13581313064047} is an apocalyptic number.

13581313064047 is a deficient number, since it is larger than the sum of its proper divisors (186045384513).

13581313064047 is an equidigital number, since it uses as much as digits as its factorization.

13581313064047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186045384512.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 13581313064047 in words is "thirteen trillion, five hundred eighty-one billion, three hundred thirteen million, sixty-four thousand, forty-seven".