66892319665 has 8 divisors (see below), whose sum is σ = 80272231488. Its totient is φ = 53512890480.

The previous prime is 66892319603. The next prime is 66892319701. The reversal of 66892319665 is 56691329866.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-66892319665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354054 + ... + 509056.

It is an arithmetic number, because the mean of its divisors is an integer number (10034028936).

Almost surely, 2^66892319665 is an apocalyptic number.

It is an amenable number.

66892319665 is a deficient number, since it is larger than the sum of its proper divisors (13379911823).

66892319665 is a wasteful number, since it uses less digits than its factorization.

66892319665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241319.

The product of its digits is 25194240, while the sum is 61.

The spelling of 66892319665 in words is "sixty-six billion, eight hundred ninety-two million, three hundred nineteen thousand, six hundred sixty-five".