136121550133666 has 16 divisors (see below), whose sum is σ = 204426872832600. Its totient is φ = 67979296770048.

The previous prime is 136121550133627. The next prime is 136121550133697. The reversal of 136121550133666 is 666331055121631.

It can be written as a sum of positive squares in 4 ways, for example, as 104002365404025 + 32119184729641 = 10198155^2 + 5667379^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2147055 + ... + 16638898.

Almost surely, 2^{136121550133666} is an apocalyptic number.

136121550133666 is a deficient number, since it is larger than the sum of its proper divisors (68305322698934).

136121550133666 is a wasteful number, since it uses less digits than its factorization.

136121550133666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18790293.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 136121550133666 in words is "one hundred thirty-six trillion, one hundred twenty-one billion, five hundred fifty million, one hundred thirty-three thousand, six hundred sixty-six".