240609795066853 has 2 divisors, whose sum is σ = 240609795066854. Its totient is φ = 240609795066852.

The previous prime is 240609795066793. The next prime is 240609795066859. The reversal of 240609795066853 is 358660597906042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189957223555009 + 50652571511844 = 13782497^2 + 7117062^2 .

It is a cyclic number.

It is not a de Polignac number, because 240609795066853 - 2⁴⁵ = 205425422978021 is a prime.

It is a super-2 number, since 2×240609795066853² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240609795066859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120304897533426 + 120304897533427.

It is an arithmetic number, because the mean of its divisors is an integer number (120304897533427).

Almost surely, 2^{240609795066853} is an apocalyptic number.

It is an amenable number.

240609795066853 is a deficient number, since it is larger than the sum of its proper divisors (1).

240609795066853 is an equidigital number, since it uses as much as digits as its factorization.

240609795066853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 587865600, while the sum is 70.

The spelling of 240609795066853 in words is "two hundred forty trillion, six hundred nine billion, seven hundred ninety-five million, sixty-six thousand, eight hundred fifty-three".