636559950050 has 48 divisors (see below), whose sum is σ = 1186614963240. Its totient is φ = 254062448640.

The previous prime is 636559950043. The next prime is 636559950071. The reversal of 636559950050 is 50059955636.

It can be written as a sum of positive squares in 12 ways, for example, as 38911902121 + 597648047929 = 197261^2 + 773077^2 .

It is a junction number, because it is equal to n+sod(n) for n = 636559949974 and 636559950001.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 64758536 + ... + 64768364.

Almost surely, 2^636559950050 is an apocalyptic number.

636559950050 is a deficient number, since it is larger than the sum of its proper divisors (550055013190).

636559950050 is a wasteful number, since it uses less digits than its factorization.

636559950050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12567 (or 12562 counting only the distinct ones).

The product of its (nonzero) digits is 5467500, while the sum is 53.

The spelling of 636559950050 in words is "six hundred thirty-six billion, five hundred fifty-nine million, nine hundred fifty thousand, fifty".