111505423053 has 4 divisors (see below), whose sum is σ = 148673897408. Its totient is φ = 74336948700.

The previous prime is 111505423031. The next prime is 111505423093. The reversal of 111505423053 is 350324505111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111505423053 - 2¹⁰ = 111505422029 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 111505423053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111505423013) 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, 18584237173 + ... + 18584237178.

It is an arithmetic number, because the mean of its divisors is an integer number (37168474352).

Almost surely, 2^111505423053 is an apocalyptic number.

It is an amenable number.

111505423053 is a deficient number, since it is larger than the sum of its proper divisors (37168474355).

111505423053 is an equidigital number, since it uses as much as digits as its factorization.

111505423053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37168474354.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 111505423053 its reverse (350324505111), we get a palindrome (461829928164).

The spelling of 111505423053 in words is "one hundred eleven billion, five hundred five million, four hundred twenty-three thousand, fifty-three".