109309645078 has 16 divisors (see below), whose sum is σ = 164233092240. Its totient is φ = 54565335136.

The previous prime is 109309645061. The next prime is 109309645079. The reversal of 109309645078 is 870546903901.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109309645079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4673100 + ... + 4696432.

It is an arithmetic number, because the mean of its divisors is an integer number (10264568265).

Almost surely, 2^109309645078 is an apocalyptic number.

109309645078 is a deficient number, since it is larger than the sum of its proper divisors (54923447162).

109309645078 is a wasteful number, since it uses less digits than its factorization.

109309645078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27071.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 109309645078 in words is "one hundred nine billion, three hundred nine million, six hundred forty-five thousand, seventy-eight".