13061664328 has 8 divisors (see below), whose sum is σ = 24490620630. Its totient is φ = 6530832160.

The previous prime is 13061664299. The next prime is 13061664389. The reversal of 13061664328 is 82346616031.

It can be written as a sum of positive squares in only one way, i.e., 13032048964 + 29615364 = 114158^2 + 5442^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 816354013 + ... + 816354028.

Almost surely, 2^13061664328 is an apocalyptic number.

It is an amenable number.

13061664328 is a deficient number, since it is larger than the sum of its proper divisors (11428956302).

13061664328 is a wasteful number, since it uses less digits than its factorization.

13061664328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632708047 (or 1632708043 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 13061664328 in words is "thirteen billion, sixty-one million, six hundred sixty-four thousand, three hundred twenty-eight".