66205831318 has 16 divisors (see below), whose sum is σ = 111831552000. Its totient is φ = 29122799400.

The previous prime is 66205831297. The next prime is 66205831319. The reversal of 66205831318 is 81313850266.

66205831318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66205831319) 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, 48537318 + ... + 48538681.

It is an arithmetic number, because the mean of its divisors is an integer number (6989472000).

Almost surely, 2^66205831318 is an apocalyptic number.

66205831318 is a deficient number, since it is larger than the sum of its proper divisors (45625720682).

66205831318 is a wasteful number, since it uses less digits than its factorization.

66205831318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97076043.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 66205831318 in words is "sixty-six billion, two hundred five million, eight hundred thirty-one thousand, three hundred eighteen".