923245859681 has 2 divisors, whose sum is σ = 923245859682. Its totient is φ = 923245859680.

The previous prime is 923245859671. The next prime is 923245859743. The reversal of 923245859681 is 186958542329.

It is an a-pointer prime, because the next prime (923245859743) can be obtained adding 923245859681 to its sum of digits (62).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 764715270400 + 158530589281 = 874480^2 + 398159^2 .

It is a cyclic number.

It is not a de Polignac number, because 923245859681 - 2¹⁴ = 923245843297 is a prime.

It is a super-2 number, since 2×923245859681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (923245859671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461622929840 + 461622929841.

It is an arithmetic number, because the mean of its divisors is an integer number (461622929841).

Almost surely, 2^923245859681 is an apocalyptic number.

It is an amenable number.

923245859681 is a deficient number, since it is larger than the sum of its proper divisors (1).

923245859681 is an equidigital number, since it uses as much as digits as its factorization.

923245859681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37324800, while the sum is 62.

The spelling of 923245859681 in words is "nine hundred twenty-three billion, two hundred forty-five million, eight hundred fifty-nine thousand, six hundred eighty-one".