8445377533 has 2 divisors, whose sum is σ = 8445377534. Its totient is φ = 8445377532.

The previous prime is 8445377491. The next prime is 8445377543. The reversal of 8445377533 is 3357735448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4877346244 + 3568031289 = 69838^2 + 59733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8445377533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8445377543) 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, 4222688766 + 4222688767.

It is an arithmetic number, because the mean of its divisors is an integer number (4222688767).

Almost surely, 2^8445377533 is an apocalyptic number.

It is an amenable number.

8445377533 is a deficient number, since it is larger than the sum of its proper divisors (1).

8445377533 is an equidigital number, since it uses as much as digits as its factorization.

8445377533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4233600, while the sum is 49.

The square root of 8445377533 is about 91898.7352089244. The cubic root of 8445377533 is about 2036.4465832076.

The spelling of 8445377533 in words is "eight billion, four hundred forty-five million, three hundred seventy-seven thousand, five hundred thirty-three".