13664361047 has 4 divisors (see below), whose sum is σ = 13664815416. Its totient is φ = 13663906680.

The previous prime is 13664360999. The next prime is 13664361097. The reversal of 13664361047 is 74016346631.

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 13664361047 - 2¹⁰ = 13664360023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13664360995 and 13664361013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13664361097) 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, 178613 + ... + 243374.

It is an arithmetic number, because the mean of its divisors is an integer number (3416203854).

Almost surely, 2^13664361047 is an apocalyptic number.

13664361047 is a deficient number, since it is larger than the sum of its proper divisors (454369).

13664361047 is an equidigital number, since it uses as much as digits as its factorization.

13664361047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454368.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 13664361047 in words is "thirteen billion, six hundred sixty-four million, three hundred sixty-one thousand, forty-seven".