66208795899 has 8 divisors (see below), whose sum is σ = 88289080320. Its totient is φ = 44133854376.

The previous prime is 66208795889. The next prime is 66208795927. The reversal of 66208795899 is 99859780266.

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

It is not a de Polignac number, because 66208795899 - 2⁷ = 66208795771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66208795889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1306719 + ... + 1356440.

It is an arithmetic number, because the mean of its divisors is an integer number (11036135040).

Almost surely, 2^66208795899 is an apocalyptic number.

66208795899 is a deficient number, since it is larger than the sum of its proper divisors (22080284421).

66208795899 is a wasteful number, since it uses less digits than its factorization.

66208795899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671449.

The product of its (nonzero) digits is 117573120, while the sum is 69.

The spelling of 66208795899 in words is "sixty-six billion, two hundred eight million, seven hundred ninety-five thousand, eight hundred ninety-nine".