136121566 has 8 divisors (see below), whose sum is σ = 233351280. Its totient is φ = 58337808.

The previous prime is 136121519. The next prime is 136121569. The reversal of 136121566 is 665121631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136121569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4861471 + ... + 4861498.

It is an arithmetic number, because the mean of its divisors is an integer number (29168910).

Almost surely, 2^136121566 is an apocalyptic number.

136121566 is a deficient number, since it is larger than the sum of its proper divisors (97229714).

136121566 is an equidigital number, since it uses as much as digits as its factorization.

136121566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722978.

The product of its digits is 6480, while the sum is 31.

The square root of 136121566 is about 11667.1147247295. The cubic root of 136121566 is about 514.4094981948.

The spelling of 136121566 in words is "one hundred thirty-six million, one hundred twenty-one thousand, five hundred sixty-six".