10065546661 has 4 divisors (see below), whose sum is σ = 10068588172. Its totient is φ = 10062505152.

The previous prime is 10065546653. The next prime is 10065546691. The reversal of 10065546661 is 16664556001.

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 3698464225 + 6367082436 = 60815^2 + 79794^2 .

It is a cyclic number.

It is not a de Polignac number, because 10065546661 - 2³ = 10065546653 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 (10065546691) 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, 1515786 + ... + 1522411.

It is an arithmetic number, because the mean of its divisors is an integer number (2517147043).

Almost surely, 2^10065546661 is an apocalyptic number.

It is an amenable number.

10065546661 is a deficient number, since it is larger than the sum of its proper divisors (3041511).

10065546661 is an equidigital number, since it uses as much as digits as its factorization.

10065546661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041510.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 10065546661 in words is "ten billion, sixty-five million, five hundred forty-six thousand, six hundred sixty-one".