8652427781 has 2 divisors, whose sum is σ = 8652427782. Its totient is φ = 8652427780.

The previous prime is 8652427747. The next prime is 8652427813. The reversal of 8652427781 is 1877242568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8062423681 + 590004100 = 89791^2 + 24290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8652427781 is a prime.

It is a super-2 number, since 2×8652427781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8652427181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4326213890 + 4326213891.

It is an arithmetic number, because the mean of its divisors is an integer number (4326213891).

Almost surely, 2^8652427781 is an apocalyptic number.

It is an amenable number.

8652427781 is a deficient number, since it is larger than the sum of its proper divisors (1).

8652427781 is an equidigital number, since it uses as much as digits as its factorization.

8652427781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1505280, while the sum is 50.

The square root of 8652427781 is about 93018.4271045259. The cubic root of 8652427781 is about 2052.9545168206.

The spelling of 8652427781 in words is "eight billion, six hundred fifty-two million, four hundred twenty-seven thousand, seven hundred eighty-one".