634423523844 has 96 divisors (see below), whose sum is σ = 1711328653440. Its totient is φ = 181092889600.

The previous prime is 634423523831. The next prime is 634423523887. The reversal of 634423523844 is 448325324436.

It is a junction number, because it is equal to n+sod(n) for n = 634423523793 and 634423523802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1864179 + ... + 2178074.

It is an arithmetic number, because the mean of its divisors is an integer number (17826340140).

Almost surely, 2^634423523844 is an apocalyptic number.

It is an amenable number.

634423523844 is an abundant number, since it is smaller than the sum of its proper divisors (1076905129596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634423523844 is a wasteful number, since it uses less digits than its factorization.

634423523844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042341 (or 4042339 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 48.

The spelling of 634423523844 in words is "six hundred thirty-four billion, four hundred twenty-three million, five hundred twenty-three thousand, eight hundred forty-four".