111161132651 has 4 divisors (see below), whose sum is σ = 117011718600. Its totient is φ = 105310546704.

The previous prime is 111161132639. The next prime is 111161132683. The reversal of 111161132651 is 156231161111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111161132651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111161132611) 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 3 ways as a sum of consecutive naturals, for example, 2925292946 + ... + 2925292983.

It is an arithmetic number, because the mean of its divisors is an integer number (29252929650).

Almost surely, 2^111161132651 is an apocalyptic number.

111161132651 is a deficient number, since it is larger than the sum of its proper divisors (5850585949).

111161132651 is an equidigital number, since it uses as much as digits as its factorization.

111161132651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850585948.

The product of its digits is 1080, while the sum is 29.

Adding to 111161132651 its reverse (156231161111), we get a palindrome (267392293762).

The spelling of 111161132651 in words is "one hundred eleven billion, one hundred sixty-one million, one hundred thirty-two thousand, six hundred fifty-one".