13561605100 has 36 divisors (see below), whose sum is σ = 29437678368. Its totient is φ = 5422984000.

The previous prime is 13561605089. The next prime is 13561605157. The reversal of 13561605100 is 150616531.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339165 + ... + 377035.

It is an arithmetic number, because the mean of its divisors is an integer number (817713288).

Almost surely, 2^13561605100 is an apocalyptic number.

13561605100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13561605100 is an abundant number, since it is smaller than the sum of its proper divisors (15876073268).

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

13561605100 is a wasteful number, since it uses less digits than its factorization.

13561605100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41466 (or 41459 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 13561605100 in words is "thirteen billion, five hundred sixty-one million, six hundred five thousand, one hundred".