10065650111721 has 12 divisors (see below), whose sum is σ = 14672660205060. Its totient is φ = 6648869797920.

The previous prime is 10065650111711. The next prime is 10065650111729. The reversal of 10065650111721 is 12711105656001.

10065650111721 is a `hidden beast` number, since 10 + 0 + 6 + 5 + 6 + 501 + 117 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5313075710121 + 4752574401600 = 2305011^2 + 2180040^2 .

It is not a de Polignac number, because 10065650111721 - 2¹⁰ = 10065650110697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10065650111729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5130299790 + ... + 5130301751.

It is an arithmetic number, because the mean of its divisors is an integer number (1222721683755).

Almost surely, 2^{10065650111721} is an apocalyptic number.

It is an amenable number.

10065650111721 is a deficient number, since it is larger than the sum of its proper divisors (4607010093339).

10065650111721 is a wasteful number, since it uses less digits than its factorization.

10065650111721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260601656 (or 10260601653 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

Adding to 10065650111721 its reverse (12711105656001), we get a palindrome (22776755767722).

The spelling of 10065650111721 in words is "ten trillion, sixty-five billion, six hundred fifty million, one hundred eleven thousand, seven hundred twenty-one".