634563304642 has 8 divisors (see below), whose sum is σ = 954438541056. Its totient is φ = 316417124292.

The previous prime is 634563304561. The next prime is 634563304679. The reversal of 634563304642 is 246403365436.

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

It is a junction number, because it is equal to n+sod(n) for n = 634563304592 and 634563304601.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 432263098 + ... + 432264565.

It is an arithmetic number, because the mean of its divisors is an integer number (119304817632).

Almost surely, 2^634563304642 is an apocalyptic number.

634563304642 is a deficient number, since it is larger than the sum of its proper divisors (319875236414).

634563304642 is a wasteful number, since it uses less digits than its factorization.

634563304642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864528032.

The product of its (nonzero) digits is 3732480, while the sum is 46.

The spelling of 634563304642 in words is "six hundred thirty-four billion, five hundred sixty-three million, three hundred four thousand, six hundred forty-two".