636765345382 has 4 divisors (see below), whose sum is σ = 955148018076. Its totient is φ = 318382672690.

The previous prime is 636765345371. The next prime is 636765345389. The reversal of 636765345382 is 283543567636.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636765345389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159191336344 + ... + 159191336347.

It is an arithmetic number, because the mean of its divisors is an integer number (238787004519).

Almost surely, 2^636765345382 is an apocalyptic number.

636765345382 is a deficient number, since it is larger than the sum of its proper divisors (318382672694).

636765345382 is a wasteful number, since it uses less digits than its factorization.

636765345382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318382672693.

The product of its digits is 65318400, while the sum is 58.

The spelling of 636765345382 in words is "six hundred thirty-six billion, seven hundred sixty-five million, three hundred forty-five thousand, three hundred eighty-two".