19416621067 has 2 divisors, whose sum is σ = 19416621068. Its totient is φ = 19416621066.

The previous prime is 19416621041. The next prime is 19416621071. The reversal of 19416621067 is 76012661491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19416621067 - 2⁷ = 19416620939 is a prime.

It is not a weakly prime, because it can be changed into another prime (19416621097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9708310533 + 9708310534.

It is an arithmetic number, because the mean of its divisors is an integer number (9708310534).

Almost surely, 2^19416621067 is an apocalyptic number.

19416621067 is a deficient number, since it is larger than the sum of its proper divisors (1).

19416621067 is an equidigital number, since it uses as much as digits as its factorization.

19416621067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 19416621067 in words is "nineteen billion, four hundred sixteen million, six hundred twenty-one thousand, sixty-seven".