634505505436 has 48 divisors (see below), whose sum is σ = 1215597408480. Its totient is φ = 287396766720.

The previous prime is 634505505421. The next prime is 634505505463.

634505505436 is nontrivially palindromic in base 10.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 17131690 + ... + 17168686.

It is an arithmetic number, because the mean of its divisors is an integer number (25324946010).

Almost surely, 2^634505505436 is an apocalyptic number.

It is an amenable number.

634505505436 is a deficient number, since it is larger than the sum of its proper divisors (581091903044).

634505505436 is a wasteful number, since it uses less digits than its factorization.

634505505436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38374 (or 38372 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 46.

The spelling of 634505505436 in words is "six hundred thirty-four billion, five hundred five million, five hundred five thousand, four hundred thirty-six".