634320602049 has 4 divisors (see below), whose sum is σ = 845760802736. Its totient is φ = 422880401364.

The previous prime is 634320602029. The next prime is 634320602057. The reversal of 634320602049 is 940206023436.

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 not a de Polignac number, because 634320602049 - 2¹⁶ = 634320536513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 634320601998 and 634320602016.

It is not an unprimeable number, because it can be changed into a prime (634320602029) 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, 105720100339 + ... + 105720100344.

It is an arithmetic number, because the mean of its divisors is an integer number (211440200684).

Almost surely, 2^634320602049 is an apocalyptic number.

It is an amenable number.

634320602049 is a deficient number, since it is larger than the sum of its proper divisors (211440200687).

634320602049 is a wasteful number, since it uses less digits than its factorization.

634320602049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211440200686.

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 634320602049 in words is "six hundred thirty-four billion, three hundred twenty million, six hundred two thousand, forty-nine".