109724419565 has 4 divisors (see below), whose sum is σ = 131669303484. Its totient is φ = 87779535648.

The previous prime is 109724419481. The next prime is 109724419589. The reversal of 109724419565 is 565914427901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17785689769 + 91938729796 = 133363^2 + 303214^2 .

It is a cyclic number.

It is not a de Polignac number, because 109724419565 - 2¹² = 109724415469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10972441952 + ... + 10972441961.

It is an arithmetic number, because the mean of its divisors is an integer number (32917325871).

Almost surely, 2^109724419565 is an apocalyptic number.

It is an amenable number.

109724419565 is a deficient number, since it is larger than the sum of its proper divisors (21944883919).

109724419565 is an equidigital number, since it uses as much as digits as its factorization.

109724419565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21944883918.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 109724419565 in words is "one hundred nine billion, seven hundred twenty-four million, four hundred nineteen thousand, five hundred sixty-five".