635904000001 has 4 divisors (see below), whose sum is σ = 669372631600. Its totient is φ = 602435368404.

The previous prime is 635903999947. The next prime is 635904000007. The reversal of 635904000001 is 100000409536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 635904000001 - 2²⁷ = 635769782273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (635904000007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16734315771 + ... + 16734315808.

It is an arithmetic number, because the mean of its divisors is an integer number (167343157900).

Almost surely, 2^635904000001 is an apocalyptic number.

It is an amenable number.

635904000001 is a deficient number, since it is larger than the sum of its proper divisors (33468631599).

635904000001 is a wasteful number, since it uses less digits than its factorization.

635904000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33468631598.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 635904000001 its reverse (100000409536), we get a palindrome (735904409537).

The spelling of 635904000001 in words is "six hundred thirty-five billion, nine hundred four million, one", and thus it is an aban number.