13684649545 has 16 divisors (see below), whose sum is σ = 19871491968. Its totient is φ = 8831773440.

The previous prime is 13684649533. The next prime is 13684649591. The reversal of 13684649545 is 54594648631.

It is not a de Polignac number, because 13684649545 - 2⁵ = 13684649513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11499111 + ... + 11500300.

It is an arithmetic number, because the mean of its divisors is an integer number (1241968248).

Almost surely, 2^13684649545 is an apocalyptic number.

It is an amenable number.

13684649545 is a deficient number, since it is larger than the sum of its proper divisors (6186842423).

13684649545 is a wasteful number, since it uses less digits than its factorization.

13684649545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22999440.

The product of its digits is 12441600, while the sum is 55.

The spelling of 13684649545 in words is "thirteen billion, six hundred eighty-four million, six hundred forty-nine thousand, five hundred forty-five".