10243426461665 has 16 divisors (see below), whose sum is σ = 13017244060800. Its totient is φ = 7711472736000.

The previous prime is 10243426461649. The next prime is 10243426461679. The reversal of 10243426461665 is 56616462434201.

It is a happy number.

It is not a de Polignac number, because 10243426461665 - 2⁴ = 10243426461649 is a prime.

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, 9030461 + ... + 10101290.

It is an arithmetic number, because the mean of its divisors is an integer number (813577753800).

Almost surely, 2^{10243426461665} is an apocalyptic number.

It is an amenable number.

10243426461665 is a deficient number, since it is larger than the sum of its proper divisors (2773817599135).

10243426461665 is a wasteful number, since it uses less digits than its factorization.

10243426461665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19138072.

The product of its (nonzero) digits is 4976640, while the sum is 50.

Adding to 10243426461665 its reverse (56616462434201), we get a palindrome (66859888895866).

The spelling of 10243426461665 in words is "ten trillion, two hundred forty-three billion, four hundred twenty-six million, four hundred sixty-one thousand, six hundred sixty-five".