109509668843 has 4 divisors (see below), whose sum is σ = 110533123800. Its totient is φ = 108486213888.

The previous prime is 109509668759. The next prime is 109509668867. The reversal of 109509668843 is 348866905901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348866905901 = 223 ⋅1564425587.

It is a cyclic number.

It is not a de Polignac number, because 109509668843 - 2¹⁰ = 109509667819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109509661843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511727318 + ... + 511727531.

It is an arithmetic number, because the mean of its divisors is an integer number (27633280950).

Almost surely, 2^109509668843 is an apocalyptic number.

109509668843 is a deficient number, since it is larger than the sum of its proper divisors (1023454957).

109509668843 is a wasteful number, since it uses less digits than its factorization.

109509668843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023454956.

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 109509668843 in words is "one hundred nine billion, five hundred nine million, six hundred sixty-eight thousand, eight hundred forty-three".