18109552769743 has 4 divisors (see below), whose sum is σ = 18110242710000. Its totient is φ = 18108862829488.

The previous prime is 18109552769717. The next prime is 18109552769761. The reversal of 18109552769743 is 34796725590181.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18109552769743 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18109552769843) 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, 344930755 + ... + 344983252.

It is an arithmetic number, because the mean of its divisors is an integer number (4527560677500).

It is a 1-persistent number, because it is pandigital, but 2⋅18109552769743 = 36219105539486 is not.

Almost surely, 2^{18109552769743} is an apocalyptic number.

18109552769743 is a deficient number, since it is larger than the sum of its proper divisors (689940257).

18109552769743 is an equidigital number, since it uses as much as digits as its factorization.

18109552769743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689940256.

The product of its (nonzero) digits is 114307200, while the sum is 67.

The spelling of 18109552769743 in words is "eighteen trillion, one hundred nine billion, five hundred fifty-two million, seven hundred sixty-nine thousand, seven hundred forty-three".