6552165657661 has 16 divisors (see below), whose sum is σ = 7220438283520. Its totient is φ = 5907365069760.

The previous prime is 6552165657551. The next prime is 6552165657671. The reversal of 6552165657661 is 1667565612556.

It is a cyclic number.

It is not a de Polignac number, because 6552165657661 - 2²⁵ = 6552132103229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6552165657661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6552165657671) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 31441075 + ... + 31648783.

It is an arithmetic number, because the mean of its divisors is an integer number (451277392720).

Almost surely, 2^{6552165657661} is an apocalyptic number.

It is an amenable number.

6552165657661 is a deficient number, since it is larger than the sum of its proper divisors (668272625859).

6552165657661 is a wasteful number, since it uses less digits than its factorization.

6552165657661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264196.

The product of its digits is 68040000, while the sum is 61.

The spelling of 6552165657661 in words is "six trillion, five hundred fifty-two billion, one hundred sixty-five million, six hundred fifty-seven thousand, six hundred sixty-one".