242777554623271 has 2 divisors, whose sum is σ = 242777554623272. Its totient is φ = 242777554623270.

The previous prime is 242777554623269. The next prime is 242777554623281. The reversal of 242777554623271 is 172326455777242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242777554623271 - 2¹ = 242777554623269 is a prime.

Together with 242777554623269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242777554623221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121388777311635 + 121388777311636.

It is an arithmetic number, because the mean of its divisors is an integer number (121388777311636).

Almost surely, 2^{242777554623271} is an apocalyptic number.

242777554623271 is a deficient number, since it is larger than the sum of its proper divisors (1).

242777554623271 is an equidigital number, since it uses as much as digits as its factorization.

242777554623271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276595200, while the sum is 64.

The spelling of 242777554623271 in words is "two hundred forty-two trillion, seven hundred seventy-seven billion, five hundred fifty-four million, six hundred twenty-three thousand, two hundred seventy-one".