66227748127 has 8 divisors (see below), whose sum is σ = 67771883520. Its totient is φ = 64683792600.

The previous prime is 66227748073. The next prime is 66227748131. The reversal of 66227748127 is 72184772266.

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 66227748127 - 2²³ = 66219359519 is a prime.

It is a super-2 number, since 2×66227748127² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66227748527) 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, 957252 + ... + 1024102.

It is an arithmetic number, because the mean of its divisors is an integer number (8471485440).

Almost surely, 2^66227748127 is an apocalyptic number.

66227748127 is a deficient number, since it is larger than the sum of its proper divisors (1544135393).

66227748127 is a wasteful number, since it uses less digits than its factorization.

66227748127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89933.

The product of its digits is 3161088, while the sum is 52.

The spelling of 66227748127 in words is "sixty-six billion, two hundred twenty-seven million, seven hundred forty-eight thousand, one hundred twenty-seven".