66854686222 has 16 divisors (see below), whose sum is σ = 102193121232. Its totient is φ = 32790546880.

The previous prime is 66854686219. The next prime is 66854686237. The reversal of 66854686222 is 22268645866.

66854686222 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543897 + ... + 655387.

It is an arithmetic number, because the mean of its divisors is an integer number (6387070077).

Almost surely, 2^66854686222 is an apocalyptic number.

66854686222 is a deficient number, since it is larger than the sum of its proper divisors (35338435010).

66854686222 is a wasteful number, since it uses less digits than its factorization.

66854686222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117203.

The product of its digits is 13271040, while the sum is 55.

The spelling of 66854686222 in words is "sixty-six billion, eight hundred fifty-four million, six hundred eighty-six thousand, two hundred twenty-two".