111331165537 has 16 divisors (see below), whose sum is σ = 114244525440. Its totient is φ = 108448704000.

The previous prime is 111331165499. The next prime is 111331165553. The reversal of 111331165537 is 735561133111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111331165537 - 2¹⁵ = 111331132769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111331165496 and 111331165505.

It is not an unprimeable number, because it can be changed into a prime (111331165567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26896014 + ... + 26900152.

It is an arithmetic number, because the mean of its divisors is an integer number (7140282840).

Almost surely, 2^111331165537 is an apocalyptic number.

It is an amenable number.

111331165537 is a deficient number, since it is larger than the sum of its proper divisors (2913359903).

111331165537 is a wasteful number, since it uses less digits than its factorization.

111331165537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7704.

The product of its digits is 28350, while the sum is 37.

Adding to 111331165537 its reverse (735561133111), we get a palindrome (846892298648).

The spelling of 111331165537 in words is "one hundred eleven billion, three hundred thirty-one million, one hundred sixty-five thousand, five hundred thirty-seven".