13661002208 has 48 divisors (see below), whose sum is σ = 30745469664. Its totient is φ = 5853150720.

The previous prime is 13661002153. The next prime is 13661002211. The reversal of 13661002208 is 80220016631.

It is a congruent number.

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, 1298666 + ... + 1309142.

It is an arithmetic number, because the mean of its divisors is an integer number (640530618).

Almost surely, 2^13661002208 is an apocalyptic number.

It is an amenable number.

13661002208 is an abundant number, since it is smaller than the sum of its proper divisors (17084467456).

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

13661002208 is a wasteful number, since it uses less digits than its factorization.

13661002208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16315 (or 16307 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 13661002208 its reverse (80220016631), we get a palindrome (93881018839).

The spelling of 13661002208 in words is "thirteen billion, six hundred sixty-one million, two thousand, two hundred eight".