636145775732 has 12 divisors (see below), whose sum is σ = 1120627658976. Its totient is φ = 315966444600.

The previous prime is 636145775717. The next prime is 636145775803. The reversal of 636145775732 is 237577541636.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 526610138 + ... + 526611345.

It is an arithmetic number, because the mean of its divisors is an integer number (93385638248).

Almost surely, 2^636145775732 is an apocalyptic number.

It is an amenable number.

636145775732 is a deficient number, since it is larger than the sum of its proper divisors (484481883244).

636145775732 is a wasteful number, since it uses less digits than its factorization.

636145775732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053221638 (or 1053221636 counting only the distinct ones).

The product of its digits is 22226400, while the sum is 56.

The spelling of 636145775732 in words is "six hundred thirty-six billion, one hundred forty-five million, seven hundred seventy-five thousand, seven hundred thirty-two".