634648323029 has 4 divisors (see below), whose sum is σ = 725312369184. Its totient is φ = 543984276876.

The previous prime is 634648322911. The next prime is 634648323079. The reversal of 634648323029 is 920323846436.

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 a de Polignac number, because none of the positive numbers 2^k-634648323029 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 (634648323079) 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, 45332023067 + ... + 45332023080.

It is an arithmetic number, because the mean of its divisors is an integer number (181328092296).

Almost surely, 2^634648323029 is an apocalyptic number.

It is an amenable number.

634648323029 is a deficient number, since it is larger than the sum of its proper divisors (90664046155).

634648323029 is an equidigital number, since it uses as much as digits as its factorization.

634648323029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90664046154.

The product of its (nonzero) digits is 4478976, while the sum is 50.

The spelling of 634648323029 in words is "six hundred thirty-four billion, six hundred forty-eight million, three hundred twenty-three thousand, twenty-nine".