2772728565 has 32 divisors (see below), whose sum is σ = 4518892800. Its totient is φ = 1451466240.

The previous prime is 2772728561. The next prime is 2772728579. The reversal of 2772728565 is 5658272772.

It is not a de Polignac number, because 2772728565 - 2² = 2772728561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772728561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238201 + ... + 249569.

It is an arithmetic number, because the mean of its divisors is an integer number (141215400).

Almost surely, 2^2772728565 is an apocalyptic number.

It is an amenable number.

2772728565 is a deficient number, since it is larger than the sum of its proper divisors (1746164235).

2772728565 is a wasteful number, since it uses less digits than its factorization.

2772728565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11677.

The product of its digits is 3292800, while the sum is 51.

The square root of 2772728565 is about 52656.7048437329. The cubic root of 2772728565 is about 1404.8688580458.

The spelling of 2772728565 in words is "two billion, seven hundred seventy-two million, seven hundred twenty-eight thousand, five hundred sixty-five".