56667222169 has 2 divisors, whose sum is σ = 56667222170. Its totient is φ = 56667222168.

The previous prime is 56667222151. The next prime is 56667222181. The reversal of 56667222169 is 96122276665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29527954569 + 27139267600 = 171837^2 + 164740^2 .

It is a cyclic number.

It is not a de Polignac number, because 56667222169 - 2⁵ = 56667222137 is a prime.

It is a super-2 number, since 2×56667222169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56667222109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28333611084 + 28333611085.

It is an arithmetic number, because the mean of its divisors is an integer number (28333611085).

Almost surely, 2^56667222169 is an apocalyptic number.

It is an amenable number.

56667222169 is a deficient number, since it is larger than the sum of its proper divisors (1).

56667222169 is an equidigital number, since it uses as much as digits as its factorization.

56667222169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 52.

The spelling of 56667222169 in words is "fifty-six billion, six hundred sixty-seven million, two hundred twenty-two thousand, one hundred sixty-nine".