10268506861 has 2 divisors, whose sum is σ = 10268506862. Its totient is φ = 10268506860.

The previous prime is 10268506819. The next prime is 10268506873. The reversal of 10268506861 is 16860586201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9210240900 + 1058265961 = 95970^2 + 32531^2 .

It is a cyclic number.

It is not a de Polignac number, because 10268506861 - 2⁹ = 10268506349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10268500861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5134253430 + 5134253431.

It is an arithmetic number, because the mean of its divisors is an integer number (5134253431).

Almost surely, 2^10268506861 is an apocalyptic number.

It is an amenable number.

10268506861 is a deficient number, since it is larger than the sum of its proper divisors (1).

10268506861 is an equidigital number, since it uses as much as digits as its factorization.

10268506861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 10268506861 in words is "ten billion, two hundred sixty-eight million, five hundred six thousand, eight hundred sixty-one".