3666553331 has 24 divisors (see below), whose sum is σ = 4388095296. Its totient is φ = 3053178240.

The previous prime is 3666553327. The next prime is 3666553357. The reversal of 3666553331 is 1333556663.

It is not a de Polignac number, because 3666553331 - 2² = 3666553327 is a prime.

It is a super-2 number, since 2×3666553331² = 26887226658134391122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3666553321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309701 + ... + 321321.

It is an arithmetic number, because the mean of its divisors is an integer number (182837304).

Almost surely, 2^3666553331 is an apocalyptic number.

3666553331 is a deficient number, since it is larger than the sum of its proper divisors (721541965).

3666553331 is a wasteful number, since it uses less digits than its factorization.

3666553331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11819 (or 11812 counting only the distinct ones).

The product of its digits is 437400, while the sum is 41.

The square root of 3666553331 is about 60552.0712362509. The cubic root of 3666553331 is about 1542.0057817408.

The spelling of 3666553331 in words is "three billion, six hundred sixty-six million, five hundred fifty-three thousand, three hundred thirty-one".