109143676161 has 81 divisors (see below), whose sum is σ = 175665957129. Its totient is φ = 65270342592.

The previous prime is 109143676099. The next prime is 109143676181. The reversal of 109143676161 is 161676341901.

The square root of 109143676161 is 330369.

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

109143676161 is a `hidden beast` number, since 1 + 0 + 91 + 436 + 76 + 1 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6794869761 + 102348806400 = 82431^2 + 319920^2 .

It is not a de Polignac number, because 109143676161 - 2²³ = 109135287553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109143676181) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 554028715 + ... + 554028911.

Almost surely, 2^109143676161 is an apocalyptic number.

109143676161 is the 330369-th square number.

109143676161 is the 165185-th centered octagonal number.

It is an amenable number.

109143676161 is a deficient number, since it is larger than the sum of its proper divisors (66522280968).

109143676161 is an equidigital number, since it uses as much as digits as its factorization.

109143676161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 109143676161 in words is "one hundred nine billion, one hundred forty-three million, six hundred seventy-six thousand, one hundred sixty-one".