411866165824 has 21 divisors (see below), whose sum is σ = 817307111001. Its totient is φ = 205930515840.

The previous prime is 411866165813. The next prime is 411866165827. The reversal of 411866165824 is 428561668114.

The square root of 411866165824 is 641768.

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

It can be written as a sum of positive squares in only one way, i.e., 200854556224 + 211011609600 = 448168^2 + 459360^2 .

It is a super-3 number, since 3×411866165824³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (411866165827) 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 2 ways as a sum of consecutive naturals, for example, 5094034 + ... + 5174254.

Almost surely, 2^411866165824 is an apocalyptic number.

411866165824 is the 641768-th square number.

It is an amenable number.

411866165824 is a deficient number, since it is larger than the sum of its proper divisors (405440945177).

411866165824 is an frugal number, since it uses more digits than its factorization.

411866165824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160454 (or 80223 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 52.

The spelling of 411866165824 in words is "four hundred eleven billion, eight hundred sixty-six million, one hundred sixty-five thousand, eight hundred twenty-four".