8161288561108 has 6 divisors (see below), whose sum is σ = 14282254981946. Its totient is φ = 4080644280552.

The previous prime is 8161288561099. The next prime is 8161288561133. The reversal of 8161288561108 is 8011658821618.

It can be written as a sum of positive squares in only one way, i.e., 5327224054084 + 2834064507024 = 2308078^2 + 1683468^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020161070135 + ... + 1020161070142.

Almost surely, 2^{8161288561108} is an apocalyptic number.

It is an amenable number.

8161288561108 is a deficient number, since it is larger than the sum of its proper divisors (6120966420838).

8161288561108 is a wasteful number, since it uses less digits than its factorization.

8161288561108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040322140281 (or 2040322140279 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 55.

The spelling of 8161288561108 in words is "eight trillion, one hundred sixty-one billion, two hundred eighty-eight million, five hundred sixty-one thousand, one hundred eight".