1960251066509 has 2 divisors, whose sum is σ = 1960251066510. Its totient is φ = 1960251066508.

The previous prime is 1960251066503. The next prime is 1960251066541. The reversal of 1960251066509 is 9056601520691.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1293747004900 + 666504061609 = 1137430^2 + 816397^2 .

It is a cyclic number.

It is not a de Polignac number, because 1960251066509 - 2¹⁶ = 1960251000973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1960251066503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980125533254 + 980125533255.

It is an arithmetic number, because the mean of its divisors is an integer number (980125533255).

Almost surely, 2^{1960251066509} is an apocalyptic number.

It is an amenable number.

1960251066509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1960251066509 is an equidigital number, since it uses as much as digits as its factorization.

1960251066509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 874800, while the sum is 50.

The spelling of 1960251066509 in words is "one trillion, nine hundred sixty billion, two hundred fifty-one million, sixty-six thousand, five hundred nine".