634170072117 has 8 divisors (see below), whose sum is σ = 845878106080. Its totient is φ = 422621043120.

The previous prime is 634170072089. The next prime is 634170072121. The reversal of 634170072117 is 711270071436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 634170072117 - 2²⁰ = 634169023541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634170072187) 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 7 ways as a sum of consecutive naturals, for example, 39741934 + ... + 39757887.

It is an arithmetic number, because the mean of its divisors is an integer number (105734763260).

Almost surely, 2^634170072117 is an apocalyptic number.

It is an amenable number.

634170072117 is a deficient number, since it is larger than the sum of its proper divisors (211708033963).

634170072117 is a wasteful number, since it uses less digits than its factorization.

634170072117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79502483.

The product of its (nonzero) digits is 49392, while the sum is 39.

The spelling of 634170072117 in words is "six hundred thirty-four billion, one hundred seventy million, seventy-two thousand, one hundred seventeen".