13561068064 has 12 divisors (see below), whose sum is σ = 26698352814. Its totient is φ = 6780534016.

The previous prime is 13561068047. The next prime is 13561068071. The reversal of 13561068064 is 46086016531.

It can be written as a sum of positive squares in only one way, i.e., 13442083600 + 118984464 = 115940^2 + 10908^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211891657 + ... + 211891720.

Almost surely, 2^13561068064 is an apocalyptic number.

It is an amenable number.

13561068064 is a deficient number, since it is larger than the sum of its proper divisors (13137284750).

13561068064 is an equidigital number, since it uses as much as digits as its factorization.

13561068064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423783387 (or 423783379 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 13561068064 in words is "thirteen billion, five hundred sixty-one million, sixty-eight thousand, sixty-four".