6644451452 has 6 divisors (see below), whose sum is σ = 11627790048. Its totient is φ = 3322225724.

The previous prime is 6644451419. The next prime is 6644451469. The reversal of 6644451452 is 2541544466.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 830556428 + ... + 830556435.

It is an arithmetic number, because the mean of its divisors is an integer number (1937965008).

Almost surely, 2^6644451452 is an apocalyptic number.

It is an amenable number.

6644451452 is a deficient number, since it is larger than the sum of its proper divisors (4983338596).

6644451452 is a wasteful number, since it uses less digits than its factorization.

6644451452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661112867 (or 1661112865 counting only the distinct ones).

The product of its digits is 460800, while the sum is 41.

The square root of 6644451452 is about 81513.5047216104. The cubic root of 6644451452 is about 1879.9791996341.

The spelling of 6644451452 in words is "six billion, six hundred forty-four million, four hundred fifty-one thousand, four hundred fifty-two".