2771345305 has 4 divisors (see below), whose sum is σ = 3325614372. Its totient is φ = 2217076240.

The previous prime is 2771345281. The next prime is 2771345323. The reversal of 2771345305 is 5035431772.

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 744634944 + 2026710361 = 27288^2 + 45019^2 .

It is not a de Polignac number, because 2771345305 - 2¹³ = 2771337113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277134526 + ... + 277134535.

It is an arithmetic number, because the mean of its divisors is an integer number (831403593).

Almost surely, 2^2771345305 is an apocalyptic number.

It is an amenable number.

2771345305 is a deficient number, since it is larger than the sum of its proper divisors (554269067).

2771345305 is an equidigital number, since it uses as much as digits as its factorization.

2771345305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554269066.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 2771345305 is about 52643.5685055639. The cubic root of 2771345305 is about 1404.6351986620.

The spelling of 2771345305 in words is "two billion, seven hundred seventy-one million, three hundred forty-five thousand, three hundred five".