109144457389 has 12 divisors (see below), whose sum is σ = 120019361728. Its totient is φ = 99180334440.

The previous prime is 109144457377. The next prime is 109144457459. The reversal of 109144457389 is 983754441901.

It is not a de Polignac number, because 109144457389 - 2¹¹ = 109144455341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109144457309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99082 + ... + 477604.

Almost surely, 2^109144457389 is an apocalyptic number.

It is an amenable number.

109144457389 is a deficient number, since it is larger than the sum of its proper divisors (10874904339).

109144457389 is a wasteful number, since it uses less digits than its factorization.

109144457389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380928 (or 380917 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 109144457389 in words is "one hundred nine billion, one hundred forty-four million, four hundred fifty-seven thousand, three hundred eighty-nine".