13605514385768 has 8 divisors (see below), whose sum is σ = 25510339473330. Its totient is φ = 6802757192880.

The previous prime is 13605514385753. The next prime is 13605514385789. The reversal of 13605514385768 is 86758341550631.

It can be written as a sum of positive squares in only one way, i.e., 12950771243524 + 654743142244 = 3598718^2 + 809162^2 .

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

It is a super-2 number, since 2×13605514385768² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13605514385768.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 850344649103 + ... + 850344649118.

Almost surely, 2^{13605514385768} is an apocalyptic number.

It is an amenable number.

13605514385768 is a deficient number, since it is larger than the sum of its proper divisors (11904825087562).

13605514385768 is a wasteful number, since it uses less digits than its factorization.

13605514385768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700689298227 (or 1700689298223 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 62.

The spelling of 13605514385768 in words is "thirteen trillion, six hundred five billion, five hundred fourteen million, three hundred eighty-five thousand, seven hundred sixty-eight".