66378199222 has 8 divisors (see below), whose sum is σ = 100351293696. Its totient is φ = 32927767992.

The previous prime is 66378199213. The next prime is 66378199231. The reversal of 66378199222 is 22299187366.

It is an interprime number because it is at equal distance from previous prime (66378199213) and next prime (66378199231).

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

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, 130665493 + ... + 130666000.

It is an arithmetic number, because the mean of its divisors is an integer number (12543911712).

Almost surely, 2^66378199222 is an apocalyptic number.

66378199222 is a deficient number, since it is larger than the sum of its proper divisors (33973094474).

66378199222 is a wasteful number, since it uses less digits than its factorization.

66378199222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261331622.

The product of its digits is 3919104, while the sum is 55.

The spelling of 66378199222 in words is "sixty-six billion, three hundred seventy-eight million, one hundred ninety-nine thousand, two hundred twenty-two".