635142844217 has 16 divisors (see below), whose sum is σ = 744749850240. Its totient is φ = 530321807232.

The previous prime is 635142844213. The next prime is 635142844249. The reversal of 635142844217 is 712448241536.

It is not a de Polignac number, because 635142844217 - 2² = 635142844213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (635142844213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2716292 + ... + 2940837.

It is an arithmetic number, because the mean of its divisors is an integer number (46546865640).

Almost surely, 2^635142844217 is an apocalyptic number.

It is an amenable number.

635142844217 is a deficient number, since it is larger than the sum of its proper divisors (109607006023).

635142844217 is a wasteful number, since it uses less digits than its factorization.

635142844217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5657552.

The product of its digits is 1290240, while the sum is 47.

The spelling of 635142844217 in words is "six hundred thirty-five billion, one hundred forty-two million, eight hundred forty-four thousand, two hundred seventeen".