3566143347661 has 4 divisors (see below), whose sum is σ = 3588021527872. Its totient is φ = 3544265167452.

The previous prime is 3566143347653. The next prime is 3566143347707. The reversal of 3566143347661 is 1667433416653.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3566143347661 - 2³ = 3566143347653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3566143347961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10939089861 + ... + 10939090186.

It is an arithmetic number, because the mean of its divisors is an integer number (897005381968).

Almost surely, 2^{3566143347661} is an apocalyptic number.

It is an amenable number.

3566143347661 is a deficient number, since it is larger than the sum of its proper divisors (21878180211).

3566143347661 is a wasteful number, since it uses less digits than its factorization.

3566143347661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21878180210.

The product of its digits is 19595520, while the sum is 55.

The spelling of 3566143347661 in words is "three trillion, five hundred sixty-six billion, one hundred forty-three million, three hundred forty-seven thousand, six hundred sixty-one".