635606011161 has 36 divisors (see below), whose sum is σ = 1024210607056. Its totient is φ = 379466231760.

The previous prime is 635606011099. The next prime is 635606011193. The reversal of 635606011161 is 161110606536.

635606011161 is a `hidden beast` number, since 6 + 35 + 6 + 0 + 601 + 1 + 16 + 1 = 666.

It is not a de Polignac number, because 635606011161 - 2⁹ = 635606010649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (635606511161) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 4282711 + ... + 4428636.

Almost surely, 2^635606011161 is an apocalyptic number.

It is an amenable number.

635606011161 is a deficient number, since it is larger than the sum of its proper divisors (388604595895).

635606011161 is a wasteful number, since it uses less digits than its factorization.

635606011161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8711442 (or 8711428 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

Adding to 635606011161 its reverse (161110606536), we get a palindrome (796716617697).

The spelling of 635606011161 in words is "six hundred thirty-five billion, six hundred six million, eleven thousand, one hundred sixty-one".