277793742049 has 2 divisors, whose sum is σ = 277793742050. Its totient is φ = 277793742048.

The previous prime is 277793742041. The next prime is 277793742143. The reversal of 277793742049 is 940247397772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247772981824 + 30020760225 = 497768^2 + 173265^2 .

It is a cyclic number.

It is not a de Polignac number, because 277793742049 - 2³ = 277793742041 is a prime.

It is not a weakly prime, because it can be changed into another prime (277793742041) 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, 138896871024 + 138896871025.

It is an arithmetic number, because the mean of its divisors is an integer number (138896871025).

Almost surely, 2^277793742049 is an apocalyptic number.

It is an amenable number.

277793742049 is a deficient number, since it is larger than the sum of its proper divisors (1).

277793742049 is an equidigital number, since it uses as much as digits as its factorization.

277793742049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37340352, while the sum is 61.

The spelling of 277793742049 in words is "two hundred seventy-seven billion, seven hundred ninety-three million, seven hundred forty-two thousand, forty-nine".