242777453412397 has 2 divisors, whose sum is σ = 242777453412398. Its totient is φ = 242777453412396.

The previous prime is 242777453412391. The next prime is 242777453412407. The reversal of 242777453412397 is 793214354777242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227643338325316 + 15134115087081 = 15087854^2 + 3890259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242777453412397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242777453412391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121388726706198 + 121388726706199.

It is an arithmetic number, because the mean of its divisors is an integer number (121388726706199).

Almost surely, 2^{242777453412397} is an apocalyptic number.

It is an amenable number.

242777453412397 is a deficient number, since it is larger than the sum of its proper divisors (1).

242777453412397 is an equidigital number, since it uses as much as digits as its factorization.

242777453412397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497871360, while the sum is 67.

The spelling of 242777453412397 in words is "two hundred forty-two trillion, seven hundred seventy-seven billion, four hundred fifty-three million, four hundred twelve thousand, three hundred ninety-seven".