66211340318 has 8 divisors (see below), whose sum is σ = 99326836440. Its totient is φ = 33102394840.

The previous prime is 66211340309. The next prime is 66211340339. The reversal of 66211340318 is 81304311266.

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

It is a super-2 number, since 2×66211340318² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612313 + ... + 1652868.

It is an arithmetic number, because the mean of its divisors is an integer number (12415854555).

Almost surely, 2^66211340318 is an apocalyptic number.

66211340318 is a deficient number, since it is larger than the sum of its proper divisors (33115496122).

66211340318 is a wasteful number, since it uses less digits than its factorization.

66211340318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275322.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 66211340318 in words is "sixty-six billion, two hundred eleven million, three hundred forty thousand, three hundred eighteen".