4143622576921 has 9 divisors (see below), whose sum is σ = 4184454230229. Its totient is φ = 4103185601436.

The previous prime is 4143622576879. The next prime is 4143622576937. The reversal of 4143622576921 is 1296752263414.

The square root of 4143622576921 is 2035589.

It is a perfect power (a square), and thus also a powerful number.

4143622576921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4143622576921 - 2²³ = 4143614188313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4143622526921) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 209655786 + ... + 209675548.

Almost surely, 2^{4143622576921} is an apocalyptic number.

4143622576921 is the 2035589-th square number.

4143622576921 is the 1017795-th centered octagonal number.

It is an amenable number.

4143622576921 is a deficient number, since it is larger than the sum of its proper divisors (40831653308).

4143622576921 is an frugal number, since it uses more digits than its factorization.

4143622576921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39732 (or 19866 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The spelling of 4143622576921 in words is "four trillion, one hundred forty-three billion, six hundred twenty-two million, five hundred seventy-six thousand, nine hundred twenty-one".