1146516565661 has 4 divisors (see below), whose sum is σ = 1146528756924. Its totient is φ = 1146504374400.

The previous prime is 1146516565627. The next prime is 1146516565669. The reversal of 1146516565661 is 1665656156411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 347369963161 + 799146602500 = 589381^2 + 893950^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146516565661 - 2²² = 1146512371357 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 (1146516565669) 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 3 ways as a sum of consecutive naturals, for example, 5953460 + ... + 6143021.

It is an arithmetic number, because the mean of its divisors is an integer number (286632189231).

Almost surely, 2^{1146516565661} is an apocalyptic number.

It is an amenable number.

1146516565661 is a deficient number, since it is larger than the sum of its proper divisors (12191263).

1146516565661 is an equidigital number, since it uses as much as digits as its factorization.

1146516565661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12191262.

The product of its digits is 3888000, while the sum is 53.

The spelling of 1146516565661 in words is "one trillion, one hundred forty-six billion, five hundred sixteen million, five hundred sixty-five thousand, six hundred sixty-one".