242777453412391 has 2 divisors, whose sum is σ = 242777453412392. Its totient is φ = 242777453412390.

The previous prime is 242777453412313. The next prime is 242777453412397. The reversal of 242777453412391 is 193214354777242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242777453412391 - 2⁴⁵ = 207593081323559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242777453412397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121388726706195 + 121388726706196.

It is an arithmetic number, because the mean of its divisors is an integer number (121388726706196).

Almost surely, 2^{242777453412391} is an apocalyptic number.

242777453412391 is a deficient number, since it is larger than the sum of its proper divisors (1).

242777453412391 is an equidigital number, since it uses as much as digits as its factorization.

242777453412391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71124480, while the sum is 61.

The spelling of 242777453412391 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-one".