4144219785549 has 20 divisors (see below), whose sum is σ = 6215412440160. Its totient is φ = 2751805953000.

The previous prime is 4144219785533. The next prime is 4144219785557. The reversal of 4144219785549 is 9455879124414.

4144219785549 is a `hidden beast` number, since 4 + 1 + 4 + 4 + 2 + 1 + 9 + 7 + 85 + 549 = 666.

It is not a de Polignac number, because 4144219785549 - 2⁴ = 4144219785533 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4144219785569) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 101898409 + ... + 101939070.

It is an arithmetic number, because the mean of its divisors is an integer number (310770622008).

Almost surely, 2^{4144219785549} is an apocalyptic number.

It is an amenable number.

4144219785549 is a deficient number, since it is larger than the sum of its proper divisors (2071192654611).

4144219785549 is a wasteful number, since it uses less digits than its factorization.

4144219785549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203837742 (or 203837733 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The spelling of 4144219785549 in words is "four trillion, one hundred forty-four billion, two hundred nineteen million, seven hundred eighty-five thousand, five hundred forty-nine".