3666543331 has 6 divisors (see below), whose sum is σ = 4030167596. Its totient is φ = 3333221100.

The previous prime is 3666543329. The next prime is 3666543337. The reversal of 3666543331 is 1333456663.

It is not a de Polignac number, because 3666543331 - 2¹ = 3666543329 is a prime.

It is a super-2 number, since 2×3666543331² = 26887079996201151122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3666543337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15150885 + ... + 15151126.

Almost surely, 2^3666543331 is an apocalyptic number.

3666543331 is a deficient number, since it is larger than the sum of its proper divisors (363624265).

3666543331 is a wasteful number, since it uses less digits than its factorization.

3666543331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30302033 (or 30302022 counting only the distinct ones).

The product of its digits is 349920, while the sum is 40.

The square root of 3666543331 is about 60551.9886626360. The cubic root of 3666543331 is about 1542.0043798728.

Adding to 3666543331 its reverse (1333456663), we get a palindrome (4999999994).

The spelling of 3666543331 in words is "three billion, six hundred sixty-six million, five hundred forty-three thousand, three hundred thirty-one".