4224038185861 has 8 divisors (see below), whose sum is σ = 4549483551704. Its totient is φ = 3898667013120.

The previous prime is 4224038185823. The next prime is 4224038185867. The reversal of 4224038185861 is 1685818304224.

It can be written as a sum of positive squares in 4 ways, for example, as 180460137636 + 4043578048225 = 424806^2 + 2010865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4224038185861 - 2⁹ = 4224038185349 is a prime.

It is a super-2 number, since 2×4224038185861² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4224038185799 and 4224038185808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4224038185867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18429996 + ... + 18657781.

It is an arithmetic number, because the mean of its divisors is an integer number (568685443963).

Almost surely, 2^{4224038185861} is an apocalyptic number.

It is an amenable number.

4224038185861 is a deficient number, since it is larger than the sum of its proper divisors (325445365843).

4224038185861 is a wasteful number, since it uses less digits than its factorization.

4224038185861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37096551.

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 4224038185861 in words is "four trillion, two hundred twenty-four billion, thirty-eight million, one hundred eighty-five thousand, eight hundred sixty-one".