109820182645 has 4 divisors (see below), whose sum is σ = 131784219180. Its totient is φ = 87856146112.

The previous prime is 109820182573. The next prime is 109820182687. The reversal of 109820182645 is 546281028901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50451448996 + 59368733649 = 224614^2 + 243657^2 .

It is a cyclic number.

It is not a de Polignac number, because 109820182645 - 2³⁵ = 75460444277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109820182595 and 109820182604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10982018260 + ... + 10982018269.

It is an arithmetic number, because the mean of its divisors is an integer number (32946054795).

Almost surely, 2^109820182645 is an apocalyptic number.

It is an amenable number.

109820182645 is a deficient number, since it is larger than the sum of its proper divisors (21964036535).

109820182645 is an equidigital number, since it uses as much as digits as its factorization.

109820182645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21964036534.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 109820182645 in words is "one hundred nine billion, eight hundred twenty million, one hundred eighty-two thousand, six hundred forty-five".