636450650450 has 12 divisors (see below), whose sum is σ = 1183798209930. Its totient is φ = 254580260160.

The previous prime is 636450650411. The next prime is 636450650509. The reversal of 636450650450 is 54056054636.

It can be written as a sum of positive squares in 3 ways, for example, as 478240019401 + 158210631049 = 691549^2 + 397757^2 .

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 5 ways as a sum of consecutive naturals, for example, 6364506455 + ... + 6364506554.

Almost surely, 2^636450650450 is an apocalyptic number.

636450650450 is a deficient number, since it is larger than the sum of its proper divisors (547347559480).

636450650450 is a wasteful number, since it uses less digits than its factorization.

636450650450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12729013021 (or 12729013016 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 636450650450 in words is "six hundred thirty-six billion, four hundred fifty million, six hundred fifty thousand, four hundred fifty".