242627726489 has 2 divisors, whose sum is σ = 242627726490. Its totient is φ = 242627726488.

The previous prime is 242627726459. The next prime is 242627726527. The reversal of 242627726489 is 984627726242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124492537225 + 118135189264 = 352835^2 + 343708^2 .

It is a cyclic number.

It is not a de Polignac number, because 242627726489 - 2¹⁶ = 242627660953 is a prime.

It is a super-2 number, since 2×242627726489² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242627726449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121313863244 + 121313863245.

It is an arithmetic number, because the mean of its divisors is an integer number (121313863245).

Almost surely, 2^242627726489 is an apocalyptic number.

It is an amenable number.

242627726489 is a deficient number, since it is larger than the sum of its proper divisors (1).

242627726489 is an equidigital number, since it uses as much as digits as its factorization.

242627726489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32514048, while the sum is 59.

The spelling of 242627726489 in words is "two hundred forty-two billion, six hundred twenty-seven million, seven hundred twenty-six thousand, four hundred eighty-nine".