646524232844 has 24 divisors (see below), whose sum is σ = 1304491378848. Its totient is φ = 274629761280.

The previous prime is 646524232831. The next prime is 646524232883. The reversal of 646524232844 is 448232425646.

It is a junction number, because it is equal to n+sod(n) for n = 646524232792 and 646524232801.

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 7 ways as a sum of consecutive naturals, for example, 102165647 + ... + 102171974.

It is an arithmetic number, because the mean of its divisors is an integer number (54353807452).

Almost surely, 2^646524232844 is an apocalyptic number.

It is an amenable number.

646524232844 is an abundant number, since it is smaller than the sum of its proper divisors (657967146004).

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

646524232844 is a wasteful number, since it uses less digits than its factorization.

646524232844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204337745 (or 204337743 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 50.

The spelling of 646524232844 in words is "six hundred forty-six billion, five hundred twenty-four million, two hundred thirty-two thousand, eight hundred forty-four".