8777712161 has 2 divisors, whose sum is σ = 8777712162. Its totient is φ = 8777712160.

The previous prime is 8777712137. The next prime is 8777712239. The reversal of 8777712161 is 1612177778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8364199936 + 413512225 = 91456^2 + 20335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8777712161 is a prime.

It is not a weakly prime, because it can be changed into another prime (8777711161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4388856080 + 4388856081.

It is an arithmetic number, because the mean of its divisors is an integer number (4388856081).

Almost surely, 2^8777712161 is an apocalyptic number.

It is an amenable number.

8777712161 is a deficient number, since it is larger than the sum of its proper divisors (1).

8777712161 is an equidigital number, since it uses as much as digits as its factorization.

8777712161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230496, while the sum is 47.

The square root of 8777712161 is about 93689.4453020189. The cubic root of 8777712161 is about 2062.8157806108.

The spelling of 8777712161 in words is "eight billion, seven hundred seventy-seven million, seven hundred twelve thousand, one hundred sixty-one".