636083231811 has 4 divisors (see below), whose sum is σ = 848110975752. Its totient is φ = 424055487872.

The previous prime is 636083231779. The next prime is 636083231813. The reversal of 636083231811 is 118132380636.

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

It is a cyclic number.

It is not a de Polignac number, because 636083231811 - 2⁵ = 636083231779 is a prime.

It is a super-2 number, since 2×636083231811² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (636083231813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106013871966 + ... + 106013871971.

It is an arithmetic number, because the mean of its divisors is an integer number (212027743938).

Almost surely, 2^636083231811 is an apocalyptic number.

636083231811 is a deficient number, since it is larger than the sum of its proper divisors (212027743941).

636083231811 is a wasteful number, since it uses less digits than its factorization.

636083231811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212027743940.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 636083231811 in words is "six hundred thirty-six billion, eighty-three million, two hundred thirty-one thousand, eight hundred eleven".