66336212065 has 8 divisors (see below), whose sum is σ = 79825193280. Its totient is φ = 52921143792.

The previous prime is 66336212003. The next prime is 66336212071. The reversal of 66336212065 is 56021263366.

66336212065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 66336212065 - 2⁷ = 66336211937 is a prime.

It is a super-2 number, since 2×66336212065² (a number of 22 digits) contains 22 as substring.

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, 18476259 + ... + 18479848.

It is an arithmetic number, because the mean of its divisors is an integer number (9978149160).

Almost surely, 2^66336212065 is an apocalyptic number.

It is an amenable number.

66336212065 is a deficient number, since it is larger than the sum of its proper divisors (13488981215).

66336212065 is a wasteful number, since it uses less digits than its factorization.

66336212065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36956471.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 66336212065 in words is "sixty-six billion, three hundred thirty-six million, two hundred twelve thousand, sixty-five".