67120041509 has 2 divisors, whose sum is σ = 67120041510. Its totient is φ = 67120041508.

The previous prime is 67120041493. The next prime is 67120041523. The reversal of 67120041509 is 90514002176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58734976609 + 8385064900 = 242353^2 + 91570^2 .

It is a cyclic number.

It is not a de Polignac number, because 67120041509 - 2⁴ = 67120041493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67120047509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33560020754 + 33560020755.

It is an arithmetic number, because the mean of its divisors is an integer number (33560020755).

Almost surely, 2^67120041509 is an apocalyptic number.

It is an amenable number.

67120041509 is a deficient number, since it is larger than the sum of its proper divisors (1).

67120041509 is an equidigital number, since it uses as much as digits as its factorization.

67120041509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 67120041509 in words is "sixty-seven billion, one hundred twenty million, forty-one thousand, five hundred nine".