13611180560 has 40 divisors (see below), whose sum is σ = 33507527256. Its totient is φ = 5124208640.

The previous prime is 13611180529. The next prime is 13611180581. The reversal of 13611180560 is 6508111631.

It can be written as a sum of positive squares in 4 ways, for example, as 3425526784 + 10185653776 = 58528^2 + 100924^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5002751 + ... + 5005470.

Almost surely, 2^13611180560 is an apocalyptic number.

13611180560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13611180560 is an abundant number, since it is smaller than the sum of its proper divisors (19896346696).

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

13611180560 is a wasteful number, since it uses less digits than its factorization.

13611180560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10008251 (or 10008245 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 13611180560 in words is "thirteen billion, six hundred eleven million, one hundred eighty thousand, five hundred sixty".