111540653123 has 4 divisors (see below), whose sum is σ = 112040835648. Its totient is φ = 111040470600.

The previous prime is 111540653057. The next prime is 111540653141. The reversal of 111540653123 is 321356045111.

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

It is a cyclic number.

It is not a de Polignac number, because 111540653123 - 2¹⁰ = 111540652099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111540653123.

It is not an unprimeable number, because it can be changed into a prime (111540658123) 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 3 ways as a sum of consecutive naturals, for example, 250090928 + ... + 250091373.

It is an arithmetic number, because the mean of its divisors is an integer number (28010208912).

Almost surely, 2^111540653123 is an apocalyptic number.

111540653123 is a deficient number, since it is larger than the sum of its proper divisors (500182525).

111540653123 is an equidigital number, since it uses as much as digits as its factorization.

111540653123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500182524.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 111540653123 its reverse (321356045111), we get a palindrome (432896698234).

The spelling of 111540653123 in words is "one hundred eleven billion, five hundred forty million, six hundred fifty-three thousand, one hundred twenty-three".