240863212789 has 2 divisors, whose sum is σ = 240863212790. Its totient is φ = 240863212788.

The previous prime is 240863212699. The next prime is 240863212801. The reversal of 240863212789 is 987212368042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181938077764 + 58925135025 = 426542^2 + 242745^2 .

It is a cyclic number.

It is not a de Polignac number, because 240863212789 - 2⁷ = 240863212661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240863212589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120431606394 + 120431606395.

It is an arithmetic number, because the mean of its divisors is an integer number (120431606395).

Almost surely, 2^240863212789 is an apocalyptic number.

It is an amenable number.

240863212789 is a deficient number, since it is larger than the sum of its proper divisors (1).

240863212789 is an equidigital number, since it uses as much as digits as its factorization.

240863212789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 240863212789 in words is "two hundred forty billion, eight hundred sixty-three million, two hundred twelve thousand, seven hundred eighty-nine".