240321317762389 has 2 divisors, whose sum is σ = 240321317762390. Its totient is φ = 240321317762388.

The previous prime is 240321317762387. The next prime is 240321317762443. The reversal of 240321317762389 is 983267713123042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240321150267025 + 167495364 = 15502295^2 + 12942^2 .

It is a cyclic number.

It is not a de Polignac number, because 240321317762389 - 2¹ = 240321317762387 is a prime.

It is a super-2 number, since 2×240321317762389² (a number of 30 digits) contains 22 as substring.

Together with 240321317762387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240321317762387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120160658881194 + 120160658881195.

It is an arithmetic number, because the mean of its divisors is an integer number (120160658881195).

Almost surely, 2^{240321317762389} is an apocalyptic number.

It is an amenable number.

240321317762389 is a deficient number, since it is larger than the sum of its proper divisors (1).

240321317762389 is an equidigital number, since it uses as much as digits as its factorization.

240321317762389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 58.

The spelling of 240321317762389 in words is "two hundred forty trillion, three hundred twenty-one billion, three hundred seventeen million, seven hundred sixty-two thousand, three hundred eighty-nine".