66081495422 has 4 divisors (see below), whose sum is σ = 99122243136. Its totient is φ = 33040747710.

The previous prime is 66081495421. The next prime is 66081495427. The reversal of 66081495422 is 22459418066.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66081495421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16520373854 + ... + 16520373857.

It is an arithmetic number, because the mean of its divisors is an integer number (24780560784).

Almost surely, 2^66081495422 is an apocalyptic number.

66081495422 is a deficient number, since it is larger than the sum of its proper divisors (33040747714).

66081495422 is a wasteful number, since it uses less digits than its factorization.

66081495422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33040747713.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 66081495422 in words is "sixty-six billion, eighty-one million, four hundred ninety-five thousand, four hundred twenty-two".