66359227156 has 6 divisors (see below), whose sum is σ = 116128647530. Its totient is φ = 33179613576.

The previous prime is 66359227127. The next prime is 66359227159. The reversal of 66359227156 is 65172295366.

It can be written as a sum of positive squares in only one way, i.e., 44823664656 + 21535562500 = 211716^2 + 146750^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66359227159) by changing a digit.

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 as a sum of consecutive naturals, namely, 8294903391 + ... + 8294903398.

Almost surely, 2^66359227156 is an apocalyptic number.

It is an amenable number.

66359227156 is a deficient number, since it is larger than the sum of its proper divisors (49769420374).

66359227156 is a wasteful number, since it uses less digits than its factorization.

66359227156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16589806793 (or 16589806791 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 52.

The spelling of 66359227156 in words is "sixty-six billion, three hundred fifty-nine million, two hundred twenty-seven thousand, one hundred fifty-six".