111143422613 has 6 divisors (see below), whose sum is σ = 118065850626. Its totient is φ = 104605573952.

The previous prime is 111143422609. The next prime is 111143422673. The reversal of 111143422613 is 316224341111.

It can be written as a sum of positive squares in 3 ways, for example, as 82620603844 + 28522818769 = 287438^2 + 168887^2 .

It is not a de Polignac number, because 111143422613 - 2² = 111143422609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111143422673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 192289370 + ... + 192289947.

It is an arithmetic number, because the mean of its divisors is an integer number (19677641771).

Almost surely, 2^111143422613 is an apocalyptic number.

It is an amenable number.

111143422613 is a deficient number, since it is larger than the sum of its proper divisors (6922428013).

111143422613 is an equidigital number, since it uses as much as digits as its factorization.

111143422613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384579351 (or 384579334 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

Adding to 111143422613 its reverse (316224341111), we get a palindrome (427367763724).

The spelling of 111143422613 in words is "one hundred eleven billion, one hundred forty-three million, four hundred twenty-two thousand, six hundred thirteen".