4066401285 has 80 divisors (see below), whose sum is σ = 7552258560. Its totient is φ = 2091070080.

The previous prime is 4066401281. The next prime is 4066401293. The reversal of 4066401285 is 5821046604.

4066401285 is a `hidden beast` number, since 4 + 0 + 6 + 640 + 1 + 2 + 8 + 5 = 666.

It is not a de Polignac number, because 4066401285 - 2² = 4066401281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066401281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5260159 + ... + 5260931.

It is an arithmetic number, because the mean of its divisors is an integer number (94403232).

Almost surely, 2^4066401285 is an apocalyptic number.

4066401285 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4066401285 is a deficient number, since it is larger than the sum of its proper divisors (3485857275).

4066401285 is a wasteful number, since it uses less digits than its factorization.

4066401285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 4066401285 is about 63768.3407734591. The cubic root of 4066401285 is about 1596.1366798825.

Adding to 4066401285 its reverse (5821046604), we get a palindrome (9887447889).

The spelling of 4066401285 in words is "four billion, sixty-six million, four hundred one thousand, two hundred eighty-five".