240551314205509 has 2 divisors, whose sum is σ = 240551314205510. Its totient is φ = 240551314205508.

The previous prime is 240551314205479. The next prime is 240551314205563. The reversal of 240551314205509 is 905502413155042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220033612260900 + 20517701944609 = 14833530^2 + 4529647^2 .

It is a cyclic number.

It is not a de Polignac number, because 240551314205509 - 2¹¹ = 240551314203461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240551314205599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120275657102754 + 120275657102755.

It is an arithmetic number, because the mean of its divisors is an integer number (120275657102755).

Almost surely, 2^{240551314205509} is an apocalyptic number.

It is an amenable number.

240551314205509 is a deficient number, since it is larger than the sum of its proper divisors (1).

240551314205509 is an equidigital number, since it uses as much as digits as its factorization.

240551314205509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 240551314205509 in words is "two hundred forty trillion, five hundred fifty-one billion, three hundred fourteen million, two hundred five thousand, five hundred nine".