9307020649681 has 2 divisors, whose sum is σ = 9307020649682. Its totient is φ = 9307020649680.

The previous prime is 9307020649601. The next prime is 9307020649733. The reversal of 9307020649681 is 1869460207039.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8735660028225 + 571360621456 = 2955615^2 + 755884^2 .

It is a cyclic number.

It is not a de Polignac number, because 9307020649681 - 2¹⁵ = 9307020616913 is a prime.

It is a super-2 number, since 2×9307020649681² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9307020649601) 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, 4653510324840 + 4653510324841.

It is an arithmetic number, because the mean of its divisors is an integer number (4653510324841).

Almost surely, 2^{9307020649681} is an apocalyptic number.

It is an amenable number.

9307020649681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9307020649681 is an equidigital number, since it uses as much as digits as its factorization.

9307020649681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 9307020649681 in words is "nine trillion, three hundred seven billion, twenty million, six hundred forty-nine thousand, six hundred eighty-one".