10666259647 has 2 divisors, whose sum is σ = 10666259648. Its totient is φ = 10666259646.

The previous prime is 10666259633. The next prime is 10666259651. The reversal of 10666259647 is 74695266601.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10666259647 is a prime.

It is a super-2 number, since 2×10666259647² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10666259594 and 10666259603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10666257647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333129823 + 5333129824.

It is an arithmetic number, because the mean of its divisors is an integer number (5333129824).

Almost surely, 2^10666259647 is an apocalyptic number.

10666259647 is a deficient number, since it is larger than the sum of its proper divisors (1).

10666259647 is an equidigital number, since it uses as much as digits as its factorization.

10666259647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 10666259647 in words is "ten billion, six hundred sixty-six million, two hundred fifty-nine thousand, six hundred forty-seven".