771114161 has 2 divisors, whose sum is σ = 771114162. Its totient is φ = 771114160.

The previous prime is 771114143. The next prime is 771114163. The reversal of 771114161 is 161411177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667705600 + 103408561 = 25840^2 + 10169^2 .

It is a cyclic number.

It is not a de Polignac number, because 771114161 - 2²⁶ = 704005297 is a prime.

Together with 771114163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (771114163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385557080 + 385557081.

It is an arithmetic number, because the mean of its divisors is an integer number (385557081).

Almost surely, 2^771114161 is an apocalyptic number.

It is an amenable number.

771114161 is a deficient number, since it is larger than the sum of its proper divisors (1).

771114161 is an equidigital number, since it uses as much as digits as its factorization.

771114161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 29.

The square root of 771114161 is about 27768.9423817329. The cubic root of 771114161 is about 917.0075110369.

The spelling of 771114161 in words is "seven hundred seventy-one million, one hundred fourteen thousand, one hundred sixty-one".