2771046161 has 4 divisors (see below), whose sum is σ = 2984203572. Its totient is φ = 2557888752.

The previous prime is 2771046151. The next prime is 2771046169. The reversal of 2771046161 is 1616401772.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142945936 + 2628100225 = 11956^2 + 51265^2 .

It is a cyclic number.

It is not a de Polignac number, because 2771046161 - 2²⁶ = 2703937297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2771046169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106578686 + ... + 106578711.

It is an arithmetic number, because the mean of its divisors is an integer number (746050893).

Almost surely, 2^2771046161 is an apocalyptic number.

It is an amenable number.

2771046161 is a deficient number, since it is larger than the sum of its proper divisors (213157411).

2771046161 is a wasteful number, since it uses less digits than its factorization.

2771046161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213157410.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 2771046161 is about 52640.7272081228. The cubic root of 2771046161 is about 1404.5846572263.

The spelling of 2771046161 in words is "two billion, seven hundred seventy-one million, forty-six thousand, one hundred sixty-one".