3666645257630 has 64 divisors (see below), whose sum is σ = 6651393840000. Its totient is φ = 1455287758848.

The previous prime is 3666645257623. The next prime is 3666645257651. The reversal of 3666645257630 is 367525466663.

It is a self number, because there is not a number n which added to its sum of digits gives 3666645257630.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 669215231 + ... + 669220709.

It is an arithmetic number, because the mean of its divisors is an integer number (103928028750).

Almost surely, 2^{3666645257630} is an apocalyptic number.

3666645257630 is a deficient number, since it is larger than the sum of its proper divisors (2984748582370).

3666645257630 is a wasteful number, since it uses less digits than its factorization.

3666645257630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741.

The product of its (nonzero) digits is 97977600, while the sum is 59.

The spelling of 3666645257630 in words is "three trillion, six hundred sixty-six billion, six hundred forty-five million, two hundred fifty-seven thousand, six hundred thirty".