13661356433606 has 16 divisors (see below), whose sum is σ = 23803393881120. Its totient is φ = 5758885615680.

The previous prime is 13661356433587. The next prime is 13661356433693. The reversal of 13661356433606 is 60633465316631.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7998451391 + ... + 7998453098.

It is an arithmetic number, because the mean of its divisors is an integer number (1487712117570).

Almost surely, 2^{13661356433606} is an apocalyptic number.

13661356433606 is a deficient number, since it is larger than the sum of its proper divisors (10142037447514).

13661356433606 is a wasteful number, since it uses less digits than its factorization.

13661356433606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15996904559.

The product of its (nonzero) digits is 12597120, while the sum is 53.

The spelling of 13661356433606 in words is "thirteen trillion, six hundred sixty-one billion, three hundred fifty-six million, four hundred thirty-three thousand, six hundred six".