636343166087 has 8 divisors (see below), whose sum is σ = 642843438912. Its totient is φ = 629846812000.

The previous prime is 636343166059. The next prime is 636343166089. The reversal of 636343166087 is 780661343636.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 636343166087 - 2¹⁴ = 636343149703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636343166089) 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 7 ways as a sum of consecutive naturals, for example, 652703 + ... + 1303344.

It is an arithmetic number, because the mean of its divisors is an integer number (80355429864).

Almost surely, 2^636343166087 is an apocalyptic number.

636343166087 is a deficient number, since it is larger than the sum of its proper divisors (6500272825).

636343166087 is a wasteful number, since it uses less digits than its factorization.

636343166087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959369.

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 636343166087 in words is "six hundred thirty-six billion, three hundred forty-three million, one hundred sixty-six thousand, eighty-seven".