13644923578 has 16 divisors (see below), whose sum is σ = 24045600096. Its totient is φ = 5725142640.

The previous prime is 13644923519. The next prime is 13644923597. The reversal of 13644923578 is 87532944631.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23854476 + ... + 23855047.

It is an arithmetic number, because the mean of its divisors is an integer number (1502850006).

Almost surely, 2^13644923578 is an apocalyptic number.

13644923578 is a deficient number, since it is larger than the sum of its proper divisors (10400676518).

13644923578 is a wasteful number, since it uses less digits than its factorization.

13644923578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47709549.

The product of its digits is 4354560, while the sum is 52.

The spelling of 13644923578 in words is "thirteen billion, six hundred forty-four million, nine hundred twenty-three thousand, five hundred seventy-eight".