111630323561 has 8 divisors (see below), whose sum is σ = 111913717344. Its totient is φ = 111347238240.

The previous prime is 111630323551. The next prime is 111630323621. The reversal of 111630323561 is 165323036111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111630323561 is a prime.

It is a super-2 number, since 2×111630323561² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111630323551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656405 + ... + 808781.

It is an arithmetic number, because the mean of its divisors is an integer number (13989214668).

Almost surely, 2^111630323561 is an apocalyptic number.

It is an amenable number.

111630323561 is a deficient number, since it is larger than the sum of its proper divisors (283393783).

111630323561 is a wasteful number, since it uses less digits than its factorization.

111630323561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154231.

The product of its (nonzero) digits is 9720, while the sum is 32.

Adding to 111630323561 its reverse (165323036111), we get a palindrome (276953359672).

The spelling of 111630323561 in words is "one hundred eleven billion, six hundred thirty million, three hundred twenty-three thousand, five hundred sixty-one".