34163644221 has 18 divisors (see below), whose sum is σ = 57404219262. Its totient is φ = 19522082160.

The previous prime is 34163644217. The next prime is 34163644223. The reversal of 34163644221 is 12244636143.

34163644221 is a `hidden beast` number, since 3 + 4 + 1 + 6 + 3 + 644 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26351028900 + 7812615321 = 162330^2 + 88389^2 .

It is not a de Polignac number, because 34163644221 - 2² = 34163644217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34163644223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 38733850 + ... + 38734731.

Almost surely, 2^34163644221 is an apocalyptic number.

It is an amenable number.

34163644221 is a deficient number, since it is larger than the sum of its proper divisors (23240575041).

34163644221 is a wasteful number, since it uses less digits than its factorization.

34163644221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77468601 (or 77468591 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The spelling of 34163644221 in words is "thirty-four billion, one hundred sixty-three million, six hundred forty-four thousand, two hundred twenty-one".