13563435328 has 14 divisors (see below), whose sum is σ = 26914942106. Its totient is φ = 6781717632.

The previous prime is 13563435307. The next prime is 13563435337. The reversal of 13563435328 is 82353436531.

It can be written as a sum of positive squares in only one way, i.e., 13476423744 + 87011584 = 116088^2 + 9328^2 .

It is a congruent number.

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, 105964275 + ... + 105964402.

Almost surely, 2^13563435328 is an apocalyptic number.

It is an amenable number.

13563435328 is a deficient number, since it is larger than the sum of its proper divisors (13351506778).

13563435328 is an equidigital number, since it uses as much as digits as its factorization.

13563435328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211928689 (or 211928679 counting only the distinct ones).

The product of its digits is 777600, while the sum is 43.

The spelling of 13563435328 in words is "thirteen billion, five hundred sixty-three million, four hundred thirty-five thousand, three hundred twenty-eight".