242635646387 has 2 divisors, whose sum is σ = 242635646388. Its totient is φ = 242635646386.

The previous prime is 242635646381. The next prime is 242635646437. The reversal of 242635646387 is 783646536242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242635646387 - 2²⁰ = 242634597811 is a prime.

It is not a weakly prime, because it can be changed into another prime (242635646381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121317823193 + 121317823194.

It is an arithmetic number, because the mean of its divisors is an integer number (121317823194).

Almost surely, 2^242635646387 is an apocalyptic number.

242635646387 is a deficient number, since it is larger than the sum of its proper divisors (1).

242635646387 is an equidigital number, since it uses as much as digits as its factorization.

242635646387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 56.

The spelling of 242635646387 in words is "two hundred forty-two billion, six hundred thirty-five million, six hundred forty-six thousand, three hundred eighty-seven".