66702116122 has 4 divisors (see below), whose sum is σ = 100053174186. Its totient is φ = 33351058060.

The previous prime is 66702116083. The next prime is 66702116153. The reversal of 66702116122 is 22161120766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22161120766 = 2 ⋅11080560383.

It can be written as a sum of positive squares in only one way, i.e., 59515993681 + 7186122441 = 243959^2 + 84771^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16675529029 + ... + 16675529032.

Almost surely, 2^66702116122 is an apocalyptic number.

66702116122 is a deficient number, since it is larger than the sum of its proper divisors (33351058064).

66702116122 is a wasteful number, since it uses less digits than its factorization.

66702116122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33351058063.

The product of its (nonzero) digits is 12096, while the sum is 34.

Adding to 66702116122 its reverse (22161120766), we get a palindrome (88863236888).

The spelling of 66702116122 in words is "sixty-six billion, seven hundred two million, one hundred sixteen thousand, one hundred twenty-two".