67440799291 has 2 divisors, whose sum is σ = 67440799292. Its totient is φ = 67440799290.

The previous prime is 67440799289. The next prime is 67440799301. The reversal of 67440799291 is 19299704476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67440799291 - 2¹ = 67440799289 is a prime.

It is a super-2 number, since 2×67440799291² (a number of 22 digits) contains 22 as substring.

Together with 67440799289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (67440799241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33720399645 + 33720399646.

It is an arithmetic number, because the mean of its divisors is an integer number (33720399646).

Almost surely, 2^67440799291 is an apocalyptic number.

67440799291 is a deficient number, since it is larger than the sum of its proper divisors (1).

67440799291 is an equidigital number, since it uses as much as digits as its factorization.

67440799291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 67440799291 in words is "sixty-seven billion, four hundred forty million, seven hundred ninety-nine thousand, two hundred ninety-one".