6643153464 has 32 divisors (see below), whose sum is σ = 17481984000. Its totient is φ = 2097837792.

The previous prime is 6643153423. The next prime is 6643153481. The reversal of 6643153464 is 4643513466.

It is a congruent number.

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, 7283704 + ... + 7284615.

It is an arithmetic number, because the mean of its divisors is an integer number (546312000).

Almost surely, 2^6643153464 is an apocalyptic number.

It is an amenable number.

6643153464 is an abundant number, since it is smaller than the sum of its proper divisors (10838830536).

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

6643153464 is a wasteful number, since it uses less digits than its factorization.

6643153464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14568347 (or 14568343 counting only the distinct ones).

The product of its digits is 622080, while the sum is 42.

The square root of 6643153464 is about 81505.5425354620. The cubic root of 6643153464 is about 1879.8567742102.

The spelling of 6643153464 in words is "six billion, six hundred forty-three million, one hundred fifty-three thousand, four hundred sixty-four".