109818669321 has 15 divisors (see below), whose sum is σ = 164054566423. Its totient is φ = 73210457880.

The previous prime is 109818669299. The next prime is 109818669347. The reversal of 109818669321 is 123966818901.

The square root of 109818669321 is 331389.

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

109818669321 is a `hidden beast` number, since 109 + 81 + 86 + 69 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 35649593721 + 74169075600 = 188811^2 + 272340^2 .

It is not a de Polignac number, because 109818669321 - 2⁷ = 109818669193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109818669391) 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, 2964091 + ... + 3000911.

Almost surely, 2^109818669321 is an apocalyptic number.

109818669321 is the 331389-th square number.

109818669321 is the 165695-th centered octagonal number.

It is an amenable number.

109818669321 is a deficient number, since it is larger than the sum of its proper divisors (54235897102).

109818669321 is an frugal number, since it uses more digits than its factorization.

109818669321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73654 (or 36824 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 109818669321 in words is "one hundred nine billion, eight hundred eighteen million, six hundred sixty-nine thousand, three hundred twenty-one".