3668612657566 has 16 divisors (see below), whose sum is σ = 5817407029200. Its totient is φ = 1730305672128.

The previous prime is 3668612657561. The next prime is 3668612657659. The reversal of 3668612657566 is 6657562168663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3668612657561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207163761 + ... + 207181468.

It is an arithmetic number, because the mean of its divisors is an integer number (363587939325).

Almost surely, 2^{3668612657566} is an apocalyptic number.

3668612657566 is a deficient number, since it is larger than the sum of its proper divisors (2148794371634).

3668612657566 is a wasteful number, since it uses less digits than its factorization.

3668612657566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414345483.

The product of its digits is 391910400, while the sum is 67.

The spelling of 3668612657566 in words is "three trillion, six hundred sixty-eight billion, six hundred twelve million, six hundred fifty-seven thousand, five hundred sixty-six".