66577112227 has 8 divisors (see below), whose sum is σ = 67190541264. Its totient is φ = 65966311008.

The previous prime is 66577112143. The next prime is 66577112233. The reversal of 66577112227 is 72221177566.

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 66577112227 - 2⁷ = 66577112099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66577112267) 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, 606033 + ... + 707410.

It is an arithmetic number, because the mean of its divisors is an integer number (8398817658).

Almost surely, 2^66577112227 is an apocalyptic number.

66577112227 is a deficient number, since it is larger than the sum of its proper divisors (613429037).

66577112227 is a wasteful number, since it uses less digits than its factorization.

66577112227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313909.

The product of its digits is 493920, while the sum is 46.

The spelling of 66577112227 in words is "sixty-six billion, five hundred seventy-seven million, one hundred twelve thousand, two hundred twenty-seven".