13645454547 has 4 divisors (see below), whose sum is σ = 18193939400. Its totient is φ = 9096969696.

The previous prime is 13645454527. The next prime is 13645454551. The reversal of 13645454547 is 74545454631.

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

It is not a de Polignac number, because 13645454547 - 2¹⁹ = 13644930259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13645454496 and 13645454505.

It is not an unprimeable number, because it can be changed into a prime (13645454527) 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, 2274242422 + ... + 2274242427.

It is an arithmetic number, because the mean of its divisors is an integer number (4548484850).

Almost surely, 2^13645454547 is an apocalyptic number.

13645454547 is a deficient number, since it is larger than the sum of its proper divisors (4548484853).

13645454547 is an equidigital number, since it uses as much as digits as its factorization.

13645454547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4548484852.

The product of its digits is 4032000, while the sum is 48.

The spelling of 13645454547 in words is "thirteen billion, six hundred forty-five million, four hundred fifty-four thousand, five hundred forty-seven".