13556642543606 has 16 divisors (see below), whose sum is σ = 20728979006400. Its totient is φ = 6647531261448.

The previous prime is 13556642543599. The next prime is 13556642543677. The reversal of 13556642543606 is 60634524665531.

It is a super-2 number, since 2×13556642543606² (a number of 27 digits) contains 22 as substring.

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, 137046980 + ... + 137145863.

It is an arithmetic number, because the mean of its divisors is an integer number (1295561187900).

Almost surely, 2^{13556642543606} is an apocalyptic number.

13556642543606 is a deficient number, since it is larger than the sum of its proper divisors (7172336462794).

13556642543606 is a wasteful number, since it uses less digits than its factorization.

13556642543606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274193323.

The product of its (nonzero) digits is 46656000, while the sum is 56.

The spelling of 13556642543606 in words is "thirteen trillion, five hundred fifty-six billion, six hundred forty-two million, five hundred forty-three thousand, six hundred six".