4221384561669 has 16 divisors (see below), whose sum is σ = 6407160758784. Its totient is φ = 2447179455600.

The previous prime is 4221384561631. The next prime is 4221384561671. The reversal of 4221384561669 is 9661654831224.

It is a happy number.

It is not a de Polignac number, because 4221384561669 - 2¹¹ = 4221384559621 is a prime.

It is a super-2 number, since 2×4221384561669² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221384561629) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2780884987 + ... + 2780886504.

It is an arithmetic number, because the mean of its divisors is an integer number (400447547424).

Almost surely, 2^{4221384561669} is an apocalyptic number.

It is an amenable number.

4221384561669 is a deficient number, since it is larger than the sum of its proper divisors (2185776197115).

4221384561669 is a wasteful number, since it uses less digits than its factorization.

4221384561669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561771528.

The product of its digits is 14929920, while the sum is 57.

The spelling of 4221384561669 in words is "four trillion, two hundred twenty-one billion, three hundred eighty-four million, five hundred sixty-one thousand, six hundred sixty-nine".