6441644950140 has 24 divisors (see below), whose sum is σ = 18036605860560. Its totient is φ = 1717771986688.

The previous prime is 6441644950129. The next prime is 6441644950211. The reversal of 6441644950140 is 410594461446.

It is a self number, because there is not a number n which added to its sum of digits gives 6441644950140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53680374525 + ... + 53680374644.

It is an arithmetic number, because the mean of its divisors is an integer number (751525244190).

Almost surely, 2^{6441644950140} is an apocalyptic number.

6441644950140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6441644950140 is an abundant number, since it is smaller than the sum of its proper divisors (11594960910420).

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

6441644950140 is a wasteful number, since it uses less digits than its factorization.

6441644950140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107360749181 (or 107360749179 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 6441644950140 in words is "six trillion, four hundred forty-one billion, six hundred forty-four million, nine hundred fifty thousand, one hundred forty".