66271712226 has 32 divisors (see below), whose sum is σ = 140075308800. Its totient is φ = 20844522000.

The previous prime is 66271712189. The next prime is 66271712231. The reversal of 66271712226 is 62221717266.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1129416 + ... + 1186643.

It is an arithmetic number, because the mean of its divisors is an integer number (4377353400).

Almost surely, 2^66271712226 is an apocalyptic number.

66271712226 is an abundant number, since it is smaller than the sum of its proper divisors (73803596574).

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

66271712226 is a wasteful number, since it uses less digits than its factorization.

66271712226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316334.

The product of its digits is 169344, while the sum is 42.

The spelling of 66271712226 in words is "sixty-six billion, two hundred seventy-one million, seven hundred twelve thousand, two hundred twenty-six".