635233240321 has 4 divisors (see below), whose sum is σ = 635376090112. Its totient is φ = 635090390532.

The previous prime is 635233240289. The next prime is 635233240391. The reversal of 635233240321 is 123042332536.

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 635233240321 - 2⁵ = 635233240289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (635233240391) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 71418225 + ... + 71427118.

It is an arithmetic number, because the mean of its divisors is an integer number (158844022528).

Almost surely, 2^635233240321 is an apocalyptic number.

It is an amenable number.

635233240321 is a deficient number, since it is larger than the sum of its proper divisors (142849791).

635233240321 is a wasteful number, since it uses less digits than its factorization.

635233240321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142849790.

The product of its (nonzero) digits is 77760, while the sum is 34.

Adding to 635233240321 its reverse (123042332536), we get a palindrome (758275572857).

The spelling of 635233240321 in words is "six hundred thirty-five billion, two hundred thirty-three million, two hundred forty thousand, three hundred twenty-one".