227779971169 has 9 divisors (see below), whose sum is σ = 234120721107. Its totient is φ = 221606574264.

The previous prime is 227779971163. The next prime is 227779971179. The reversal of 227779971169 is 961179977722.

The square root of 227779971169 is 477263.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 203820646225 + 23959324944 = 451465^2 + 154788^2 .

It is not a de Polignac number, because 227779971169 - 2¹⁷ = 227779840097 is a prime.

It is a super-2 number, since 2×227779971169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227779971163) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17652282 + ... + 17665180.

Almost surely, 2^227779971169 is an apocalyptic number.

227779971169 is the 477263-rd square number.

227779971169 is the 238632-nd centered octagonal number.

It is an amenable number.

227779971169 is a deficient number, since it is larger than the sum of its proper divisors (6340749938).

227779971169 is an frugal number, since it uses more digits than its factorization.

227779971169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25872 (or 12936 counting only the distinct ones).

The product of its digits is 42007896, while the sum is 67.

The spelling of 227779971169 in words is "two hundred twenty-seven billion, seven hundred seventy-nine million, nine hundred seventy-one thousand, one hundred sixty-nine".