636347067049 has 8 divisors (see below), whose sum is σ = 638939927808. Its totient is φ = 633757889040.

The previous prime is 636347067007. The next prime is 636347067091. The reversal of 636347067049 is 940760743636.

It is an interprime number because it is at equal distance from previous prime (636347067007) and next prime (636347067091).

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 636347067049 - 2¹¹ = 636347065001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (636347067649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574137 + ... + 1265830.

It is an arithmetic number, because the mean of its divisors is an integer number (79867490976).

Almost surely, 2^636347067049 is an apocalyptic number.

It is an amenable number.

636347067049 is a deficient number, since it is larger than the sum of its proper divisors (2592860759).

636347067049 is a wasteful number, since it uses less digits than its factorization.

636347067049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841375.

The product of its (nonzero) digits is 13716864, while the sum is 55.

The spelling of 636347067049 in words is "six hundred thirty-six billion, three hundred forty-seven million, sixty-seven thousand, forty-nine".