109686945021 has 8 divisors (see below), whose sum is σ = 151292338080. Its totient is φ = 70603090992.

The previous prime is 109686944993. The next prime is 109686945037. The reversal of 109686945021 is 120549686901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109686945021 - 2¹⁷ = 109686813949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109686943021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630384655 + ... + 630384828.

It is an arithmetic number, because the mean of its divisors is an integer number (18911542260).

Almost surely, 2^109686945021 is an apocalyptic number.

It is an amenable number.

109686945021 is a deficient number, since it is larger than the sum of its proper divisors (41605393059).

109686945021 is a wasteful number, since it uses less digits than its factorization.

109686945021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260769515.

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 109686945021 in words is "one hundred nine billion, six hundred eighty-six million, nine hundred forty-five thousand, twenty-one".