109509668845 has 12 divisors (see below), whose sum is σ = 132287779260. Its totient is φ = 87027460800.

The previous prime is 109509668759. The next prime is 109509668867. The reversal of 109509668845 is 548866905901.

It can be written as a sum of positive squares in 2 ways, for example, as 86434236009 + 23075432836 = 293997^2 + 151906^2 .

It is not a de Polignac number, because 109509668845 - 2¹⁵ = 109509636077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366280 + ... + 594289.

It is an arithmetic number, because the mean of its divisors is an integer number (11023981605).

Almost surely, 2^109509668845 is an apocalyptic number.

It is an amenable number.

109509668845 is a deficient number, since it is larger than the sum of its proper divisors (22778110415).

109509668845 is an frugal number, since it uses more digits than its factorization.

109509668845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960876 (or 960725 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 109509668845 in words is "one hundred nine billion, five hundred nine million, six hundred sixty-eight thousand, eight hundred forty-five".