634430043243239 has 8 divisors (see below), whose sum is σ = 638952382818672. Its totient is φ = 629915388189120.

The previous prime is 634430043243223. The next prime is 634430043243307. The reversal of 634430043243239 is 932342340034436.

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

It is a cyclic number.

It is not a de Polignac number, because 634430043243239 - 2⁴ = 634430043243223 is a prime.

It is a super-2 number, since 2×634430043243239² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634430043243739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1920964622 + ... + 1921294859.

It is an arithmetic number, because the mean of its divisors is an integer number (79869047852334).

Almost surely, 2^{634430043243239} is an apocalyptic number.

634430043243239 is a deficient number, since it is larger than the sum of its proper divisors (4522339575433).

634430043243239 is a wasteful number, since it uses less digits than its factorization.

634430043243239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842260657.

The product of its (nonzero) digits is 13436928, while the sum is 50.

The spelling of 634430043243239 in words is "six hundred thirty-four trillion, four hundred thirty billion, forty-three million, two hundred forty-three thousand, two hundred thirty-nine".