13223604144 has 40 divisors (see below), whose sum is σ = 34230612672. Its totient is φ = 4398882880.

The previous prime is 13223604137. The next prime is 13223604157. The reversal of 13223604144 is 44140632231.

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, 256974 + ... + 304109.

Almost surely, 2^13223604144 is an apocalyptic number.

It is an amenable number.

13223604144 is an abundant number, since it is smaller than the sum of its proper divisors (21007008528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13223604144 is a wasteful number, since it uses less digits than its factorization.

13223604144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561585 (or 561579 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 13223604144 in words is "thirteen billion, two hundred twenty-three million, six hundred four thousand, one hundred forty-four".