111145505613 has 8 divisors (see below), whose sum is σ = 148229050176. Its totient is φ = 74079482400.

The previous prime is 111145505599. The next prime is 111145505633. The reversal of 111145505613 is 316505541111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-111145505613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111145505633) 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 7 ways as a sum of consecutive naturals, for example, 4365528 + ... + 4390913.

It is an arithmetic number, because the mean of its divisors is an integer number (18528631272).

Almost surely, 2^111145505613 is an apocalyptic number.

It is an amenable number.

111145505613 is a deficient number, since it is larger than the sum of its proper divisors (37083544563).

111145505613 is an equidigital number, since it uses as much as digits as its factorization.

111145505613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8760675.

The product of its (nonzero) digits is 9000, while the sum is 33.

The spelling of 111145505613 in words is "one hundred eleven billion, one hundred forty-five million, five hundred five thousand, six hundred thirteen".