2772855779 has 2 divisors, whose sum is σ = 2772855780. Its totient is φ = 2772855778.

The previous prime is 2772855719. The next prime is 2772855803. The reversal of 2772855779 is 9775582772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2772855779 is a prime.

It is a super-2 number, since 2×2772855779² = 15377458342267393682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2772855719) 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 as a sum of consecutive naturals, namely, 1386427889 + 1386427890.

It is an arithmetic number, because the mean of its divisors is an integer number (1386427890).

Almost surely, 2^2772855779 is an apocalyptic number.

2772855779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2772855779 is an equidigital number, since it uses as much as digits as its factorization.

2772855779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17287200, while the sum is 59.

The square root of 2772855779 is about 52657.9127862091. The cubic root of 2772855779 is about 1404.8903430499.

The spelling of 2772855779 in words is "two billion, seven hundred seventy-two million, eight hundred fifty-five thousand, seven hundred seventy-nine".