13561605168 has 20 divisors (see below), whose sum is σ = 35034146808. Its totient is φ = 4520535040.

The previous prime is 13561605163. The next prime is 13561605173. The reversal of 13561605168 is 86150616531.

It is an interprime number because it is at equal distance from previous prime (13561605163) and next prime (13561605173).

It is not an unprimeable number, because it can be changed into a prime (13561605163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141266673 + ... + 141266768.

Almost surely, 2^13561605168 is an apocalyptic number.

It is an amenable number.

13561605168 is an abundant number, since it is smaller than the sum of its proper divisors (21472541640).

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

13561605168 is a wasteful number, since it uses less digits than its factorization.

13561605168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282533452 (or 282533446 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 13561605168 in words is "thirteen billion, five hundred sixty-one million, six hundred five thousand, one hundred sixty-eight".