111600551061 has 24 divisors (see below), whose sum is σ = 167234252640. Its totient is φ = 74372303952.

The previous prime is 111600551059. The next prime is 111600551077. The reversal of 111600551061 is 160155006111.

111600551061 is a `hidden beast` number, since 1 + 1 + 1 + 600 + 5 + 51 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 111600551061 - 2¹ = 111600551059 is a prime.

It is a super-3 number, since 3×111600551061³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111600551261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 569130 + ... + 739668.

It is an arithmetic number, because the mean of its divisors is an integer number (6968093860).

Almost surely, 2^111600551061 is an apocalyptic number.

It is an amenable number.

111600551061 is a deficient number, since it is larger than the sum of its proper divisors (55633701579).

111600551061 is an equidigital number, since it uses as much as digits as its factorization.

111600551061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173247 (or 173235 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

Adding to 111600551061 its reverse (160155006111), we get a palindrome (271755557172).

The spelling of 111600551061 in words is "one hundred eleven billion, six hundred million, five hundred fifty-one thousand, sixty-one".