240570474665561 has 2 divisors, whose sum is σ = 240570474665562. Its totient is φ = 240570474665560.

The previous prime is 240570474665551. The next prime is 240570474665569. The reversal of 240570474665561 is 165566474075042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212935802982400 + 27634671683161 = 14592320^2 + 5256869^2 .

It is a cyclic number.

It is not a de Polignac number, because 240570474665561 - 2¹⁰ = 240570474664537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240570474665494 and 240570474665503.

It is not a weakly prime, because it can be changed into another prime (240570474665569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120285237332780 + 120285237332781.

It is an arithmetic number, because the mean of its divisors is an integer number (120285237332781).

Almost surely, 2^{240570474665561} is an apocalyptic number.

It is an amenable number.

240570474665561 is a deficient number, since it is larger than the sum of its proper divisors (1).

240570474665561 is an equidigital number, since it uses as much as digits as its factorization.

240570474665561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344000, while the sum is 62.

The spelling of 240570474665561 in words is "two hundred forty trillion, five hundred seventy billion, four hundred seventy-four million, six hundred sixty-five thousand, five hundred sixty-one".