242655510191 has 2 divisors, whose sum is σ = 242655510192. Its totient is φ = 242655510190.

The previous prime is 242655510187. The next prime is 242655510257. The reversal of 242655510191 is 191015556242.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242655510191 - 2² = 242655510187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242655510101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121327755095 + 121327755096.

It is an arithmetic number, because the mean of its divisors is an integer number (121327755096).

Almost surely, 2^242655510191 is an apocalyptic number.

242655510191 is a deficient number, since it is larger than the sum of its proper divisors (1).

242655510191 is an equidigital number, since it uses as much as digits as its factorization.

242655510191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 242655510191 in words is "two hundred forty-two billion, six hundred fifty-five million, five hundred ten thousand, one hundred ninety-one".