10865174921 has 2 divisors, whose sum is σ = 10865174922. Its totient is φ = 10865174920.

The previous prime is 10865174911. The next prime is 10865174959. The reversal of 10865174921 is 12947156801.

10865174921 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., 5476000000 + 5389174921 = 74000^2 + 73411^2 .

It is a cyclic number.

It is not a de Polignac number, because 10865174921 - 2⁶ = 10865174857 is a prime.

It is not a weakly prime, because it can be changed into another prime (10865174911) 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, 5432587460 + 5432587461.

It is an arithmetic number, because the mean of its divisors is an integer number (5432587461).

Almost surely, 2^10865174921 is an apocalyptic number.

It is an amenable number.

10865174921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10865174921 is an equidigital number, since it uses as much as digits as its factorization.

10865174921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 10865174921 in words is "ten billion, eight hundred sixty-five million, one hundred seventy-four thousand, nine hundred twenty-one".