67372494509 has 2 divisors, whose sum is σ = 67372494510. Its totient is φ = 67372494508.

The previous prime is 67372494499. The next prime is 67372494559. The reversal of 67372494509 is 90549427376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63400722025 + 3971772484 = 251795^2 + 63022^2 .

It is a cyclic number.

It is not a de Polignac number, because 67372494509 - 2¹⁶ = 67372428973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67372494559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33686247254 + 33686247255.

It is an arithmetic number, because the mean of its divisors is an integer number (33686247255).

Almost surely, 2^67372494509 is an apocalyptic number.

It is an amenable number.

67372494509 is a deficient number, since it is larger than the sum of its proper divisors (1).

67372494509 is an equidigital number, since it uses as much as digits as its factorization.

67372494509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 56.

The spelling of 67372494509 in words is "sixty-seven billion, three hundred seventy-two million, four hundred ninety-four thousand, five hundred nine".