8162773121 has 2 divisors, whose sum is σ = 8162773122. Its totient is φ = 8162773120.

The previous prime is 8162773109. The next prime is 8162773253. The reversal of 8162773121 is 1213772618.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6046773121 + 2116000000 = 77761^2 + 46000^2 .

It is a cyclic number.

It is not a de Polignac number, because 8162773121 - 2¹⁸ = 8162510977 is a prime.

It is not a weakly prime, because it can be changed into another prime (8162673121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4081386560 + 4081386561.

It is an arithmetic number, because the mean of its divisors is an integer number (4081386561).

Almost surely, 2^8162773121 is an apocalyptic number.

It is an amenable number.

8162773121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8162773121 is an equidigital number, since it uses as much as digits as its factorization.

8162773121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 8162773121 is about 90348.0665039380. The cubic root of 8162773121 is about 2013.4734559186.

The spelling of 8162773121 in words is "eight billion, one hundred sixty-two million, seven hundred seventy-three thousand, one hundred twenty-one".