108723851289 has 15 divisors (see below), whose sum is σ = 162419075247. Its totient is φ = 72480589128.

The previous prime is 108723851263. The next prime is 108723851317. The reversal of 108723851289 is 982158327801.

The square root of 108723851289 is 329733.

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

108723851289 is a `hidden beast` number, since 1 + 0 + 87 + 238 + 51 + 289 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38653526025 + 70070325264 = 196605^2 + 264708^2 .

It is not a de Polignac number, because 108723851289 - 2¹⁹ = 108723327001 is a prime.

It is a super-2 number, since 2×108723851289² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108723850289) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2949279 + ... + 2985915.

Almost surely, 2^108723851289 is an apocalyptic number.

108723851289 is the 329733-rd square number.

108723851289 is the 164867-th centered octagonal number.

It is an amenable number.

108723851289 is a deficient number, since it is larger than the sum of its proper divisors (53695223958).

108723851289 is an frugal number, since it uses more digits than its factorization.

108723851289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73286 (or 36640 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 108723851289 in words is "one hundred eight billion, seven hundred twenty-three million, eight hundred fifty-one thousand, two hundred eighty-nine".