19994060065 has 8 divisors (see below), whose sum is σ = 27420425280. Its totient is φ = 13710212592.

The previous prime is 19994060059. The next prime is 19994060083. The reversal of 19994060065 is 56006049991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19994060065 - 2⁵ = 19994060033 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 285629395 + ... + 285629464.

It is an arithmetic number, because the mean of its divisors is an integer number (3427553160).

Almost surely, 2^19994060065 is an apocalyptic number.

It is an amenable number.

19994060065 is a deficient number, since it is larger than the sum of its proper divisors (7426365215).

19994060065 is an equidigital number, since it uses as much as digits as its factorization.

19994060065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571258871.

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 19994060065 in words is "nineteen billion, nine hundred ninety-four million, sixty thousand, sixty-five".