10680864721 has 2 divisors, whose sum is σ = 10680864722. Its totient is φ = 10680864720.

The previous prime is 10680864707. The next prime is 10680864769. The reversal of 10680864721 is 12746808601.

10680864721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10636828225 + 44036496 = 103135^2 + 6636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10680864721 is a prime.

It is a super-2 number, since 2×10680864721² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10680867721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5340432360 + 5340432361.

It is an arithmetic number, because the mean of its divisors is an integer number (5340432361).

Almost surely, 2^10680864721 is an apocalyptic number.

It is an amenable number.

10680864721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10680864721 is an equidigital number, since it uses as much as digits as its factorization.

10680864721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 10680864721 in words is "ten billion, six hundred eighty million, eight hundred sixty-four thousand, seven hundred twenty-one".