6644743427400 has 192 divisors, whose sum is σ = 22782767851200. Its totient is φ = 1591422888960.

The previous prime is 6644743427353. The next prime is 6644743427419. The reversal of 6644743427400 is 47243474466.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11223430 + ... + 11800629.

It is an arithmetic number, because the mean of its divisors is an integer number (118660249225).

Almost surely, 2^{6644743427400} is an apocalyptic number.

6644743427400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6644743427400 is an abundant number, since it is smaller than the sum of its proper divisors (16138024423800).

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

6644743427400 is a wasteful number, since it uses less digits than its factorization.

6644743427400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23024128 (or 23024119 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 51.

The spelling of 6644743427400 in words is "six trillion, six hundred forty-four billion, seven hundred forty-three million, four hundred twenty-seven thousand, four hundred".