254040242232989 has 2 divisors, whose sum is σ = 254040242232990. Its totient is φ = 254040242232988.

The previous prime is 254040242232947. The next prime is 254040242232991. The reversal of 254040242232989 is 989232242040452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217130303856964 + 36909938376025 = 14735342^2 + 6075355^2 .

It is a cyclic number.

It is not a de Polignac number, because 254040242232989 - 2¹² = 254040242228893 is a prime.

Together with 254040242232991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254040242432989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127020121116494 + 127020121116495.

It is an arithmetic number, because the mean of its divisors is an integer number (127020121116495).

Almost surely, 2^{254040242232989} is an apocalyptic number.

It is an amenable number.

254040242232989 is a deficient number, since it is larger than the sum of its proper divisors (1).

254040242232989 is an equidigital number, since it uses as much as digits as its factorization.

254040242232989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19906560, while the sum is 56.

The spelling of 254040242232989 in words is "two hundred fifty-four trillion, forty billion, two hundred forty-two million, two hundred thirty-two thousand, nine hundred eighty-nine".