67375814491 has 2 divisors, whose sum is σ = 67375814492. Its totient is φ = 67375814490.

The previous prime is 67375814477. The next prime is 67375814507. The reversal of 67375814491 is 19441857376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67375814491 - 2⁵ = 67375814459 is a prime.

It is not a weakly prime, because it can be changed into another prime (67375814411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33687907245 + 33687907246.

It is an arithmetic number, because the mean of its divisors is an integer number (33687907246).

Almost surely, 2^67375814491 is an apocalyptic number.

67375814491 is a deficient number, since it is larger than the sum of its proper divisors (1).

67375814491 is an equidigital number, since it uses as much as digits as its factorization.

67375814491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 55.

The spelling of 67375814491 in words is "sixty-seven billion, three hundred seventy-five million, eight hundred fourteen thousand, four hundred ninety-one".