67859216665 has 16 divisors (see below), whose sum is σ = 82671878016. Its totient is φ = 53461900800.

The previous prime is 67859216603. The next prime is 67859216669. The reversal of 67859216665 is 56661295876.

It is not a de Polignac number, because 67859216665 - 2²³ = 67850828057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67859216669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205225 + ... + 421705.

It is an arithmetic number, because the mean of its divisors is an integer number (5166992376).

Almost surely, 2^67859216665 is an apocalyptic number.

It is an amenable number.

67859216665 is a deficient number, since it is larger than the sum of its proper divisors (14812661351).

67859216665 is a wasteful number, since it uses less digits than its factorization.

67859216665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217440.

The product of its digits is 32659200, while the sum is 61.

The spelling of 67859216665 in words is "sixty-seven billion, eight hundred fifty-nine million, two hundred sixteen thousand, six hundred sixty-five".