2779271747977 has 2 divisors, whose sum is σ = 2779271747978. Its totient is φ = 2779271747976.

The previous prime is 2779271747969. The next prime is 2779271748017. The reversal of 2779271747977 is 7797471729772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1883108485696 + 896163262281 = 1372264^2 + 946659^2 .

It is a cyclic number.

It is not a de Polignac number, because 2779271747977 - 2³ = 2779271747969 is a prime.

It is not a weakly prime, because it can be changed into another prime (2779271747177) 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, 1389635873988 + 1389635873989.

It is an arithmetic number, because the mean of its divisors is an integer number (1389635873989).

Almost surely, 2^{2779271747977} is an apocalyptic number.

It is an amenable number.

2779271747977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2779271747977 is an equidigital number, since it uses as much as digits as its factorization.

2779271747977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1067311728, while the sum is 76.

The spelling of 2779271747977 in words is "two trillion, seven hundred seventy-nine billion, two hundred seventy-one million, seven hundred forty-seven thousand, nine hundred seventy-seven".