3666557511 has 12 divisors (see below), whose sum is σ = 5299395192. Its totient is φ = 2442868656.

The previous prime is 3666557473. The next prime is 3666557527. The reversal of 3666557511 is 1157556663.

It is not a de Polignac number, because 3666557511 - 2²³ = 3658168903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666557591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109701 + ... + 139166.

It is an arithmetic number, because the mean of its divisors is an integer number (441616266).

Almost surely, 2^3666557511 is an apocalyptic number.

3666557511 is a deficient number, since it is larger than the sum of its proper divisors (1632837681).

3666557511 is a wasteful number, since it uses less digits than its factorization.

3666557511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250510 (or 250507 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 3666557511 is about 60552.1057519885. The cubic root of 3666557511 is about 1542.0063677209.

The spelling of 3666557511 in words is "three billion, six hundred sixty-six million, five hundred fifty-seven thousand, five hundred eleven".