10256115665 has 16 divisors (see below), whose sum is σ = 12400242048. Its totient is φ = 8143099776.

The previous prime is 10256115641. The next prime is 10256115689. The reversal of 10256115665 is 56651165201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10256115641) and next prime (10256115689).

It is a cyclic number.

It is not a de Polignac number, because 10256115665 - 2⁸ = 10256115409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597077 + ... + 614013.

It is an arithmetic number, because the mean of its divisors is an integer number (775015128).

Almost surely, 2^10256115665 is an apocalyptic number.

It is an amenable number.

10256115665 is a deficient number, since it is larger than the sum of its proper divisors (2144126383).

10256115665 is a wasteful number, since it uses less digits than its factorization.

10256115665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17848.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 10256115665 in words is "ten billion, two hundred fifty-six million, one hundred fifteen thousand, six hundred sixty-five".