65722267218 has 8 divisors (see below), whose sum is σ = 131444534448. Its totient is φ = 21907422404.

The previous prime is 65722267211. The next prime is 65722267267. The reversal of 65722267218 is 81276222756.

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

65722267218 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (65722267211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5476855596 + ... + 5476855607.

It is an arithmetic number, because the mean of its divisors is an integer number (16430566806).

Almost surely, 2^65722267218 is an apocalyptic number.

65722267218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65722267218 is a wasteful number, since it uses less digits than its factorization.

65722267218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10953711208.

The product of its digits is 1128960, while the sum is 48.

The spelling of 65722267218 in words is "sixty-five billion, seven hundred twenty-two million, two hundred sixty-seven thousand, two hundred eighteen".