771310161 has 8 divisors (see below), whose sum is σ = 1142681760. Its totient is φ = 514206756.

The previous prime is 771310159. The next prime is 771310171. The reversal of 771310161 is 161013177.

771310161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 771310161 - 2¹ = 771310159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 28567043 = 771310161 / (7 + 7 + 1 + 3 + 1 + 0 + 1 + 6 + 1).

It is not an unprimeable number, because it can be changed into a prime (771310171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14283495 + ... + 14283548.

It is an arithmetic number, because the mean of its divisors is an integer number (142835220).

Almost surely, 2^771310161 is an apocalyptic number.

It is an amenable number.

771310161 is a deficient number, since it is larger than the sum of its proper divisors (371371599).

771310161 is a wasteful number, since it uses less digits than its factorization.

771310161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28567052 (or 28567046 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 771310161 is about 27772.4712800284. The cubic root of 771310161 is about 917.0851987323.

The spelling of 771310161 in words is "seven hundred seventy-one million, three hundred ten thousand, one hundred sixty-one".