6643254032 has 20 divisors (see below), whose sum is σ = 12885908880. Its totient is φ = 3317858208.

The previous prime is 6643254019. The next prime is 6643254061. The reversal of 6643254032 is 2304523466.

It is a junction number, because it is equal to n+sod(n) for n = 6643253983 and 6643254001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220982 + ... + 249237.

It is an arithmetic number, because the mean of its divisors is an integer number (644295444).

Almost surely, 2^6643254032 is an apocalyptic number.

It is an amenable number.

6643254032 is a deficient number, since it is larger than the sum of its proper divisors (6242654848).

6643254032 is a wasteful number, since it uses less digits than its factorization.

6643254032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471110 (or 471104 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

The square root of 6643254032 is about 81506.1594727662. The cubic root of 6643254032 is about 1879.8662602916.

Adding to 6643254032 its reverse (2304523466), we get a palindrome (8947777498).

The spelling of 6643254032 in words is "six billion, six hundred forty-three million, two hundred fifty-four thousand, thirty-two".