817232653907 has 2 divisors, whose sum is σ = 817232653908. Its totient is φ = 817232653906.

The previous prime is 817232653859. The next prime is 817232653957. The reversal of 817232653907 is 709356232718.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 817232653907 - 2¹⁶ = 817232588371 is a prime.

It is a super-2 number, since 2×817232653907² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (817232653957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408616326953 + 408616326954.

It is an arithmetic number, because the mean of its divisors is an integer number (408616326954).

Almost surely, 2^817232653907 is an apocalyptic number.

817232653907 is a deficient number, since it is larger than the sum of its proper divisors (1).

817232653907 is an equidigital number, since it uses as much as digits as its factorization.

817232653907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 817232653907 in words is "eight hundred seventeen billion, two hundred thirty-two million, six hundred fifty-three thousand, nine hundred seven".