13065309444 has 72 divisors (see below), whose sum is σ = 34326550944. Its totient is φ = 3862601600.

The previous prime is 13065309443. The next prime is 13065309451. The reversal of 13065309444 is 44490356031.

It is not an unprimeable number, because it can be changed into a prime (13065309443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50202 + ... + 169265.

It is an arithmetic number, because the mean of its divisors is an integer number (476757652).

Almost surely, 2^13065309444 is an apocalyptic number.

It is an amenable number.

13065309444 is an abundant number, since it is smaller than the sum of its proper divisors (21261241500).

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

13065309444 is a wasteful number, since it uses less digits than its factorization.

13065309444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219537 (or 219524 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 13065309444 in words is "thirteen billion, sixty-five million, three hundred nine thousand, four hundred forty-four".