66229974271 has 8 divisors (see below), whose sum is σ = 66868548624. Its totient is φ = 65592320640.

The previous prime is 66229974247. The next prime is 66229974289. The reversal of 66229974271 is 17247992266.

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

It is a cyclic number.

It is not a de Polignac number, because 66229974271 - 2²¹ = 66227877119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66229974241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85185 + ... + 373786.

It is an arithmetic number, because the mean of its divisors is an integer number (8358568578).

Almost surely, 2^66229974271 is an apocalyptic number.

66229974271 is a deficient number, since it is larger than the sum of its proper divisors (638574353).

66229974271 is a wasteful number, since it uses less digits than its factorization.

66229974271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460361.

The product of its digits is 4572288, while the sum is 55.

The spelling of 66229974271 in words is "sixty-six billion, two hundred twenty-nine million, nine hundred seventy-four thousand, two hundred seventy-one".