61116111087 has 24 divisors (see below), whose sum is σ = 84575073792. Its totient is φ = 39235605360.

The previous prime is 61116111059. The next prime is 61116111131. The reversal of 61116111087 is 78011161116.

It is not a de Polignac number, because 61116111087 - 2¹¹ = 61116109039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61116111047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 603298 + ... + 697280.

It is an arithmetic number, because the mean of its divisors is an integer number (3523961408).

Almost surely, 2^61116111087 is an apocalyptic number.

61116111087 is a deficient number, since it is larger than the sum of its proper divisors (23458962705).

61116111087 is an equidigital number, since it uses as much as digits as its factorization.

61116111087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94171 (or 94100 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 33.

The spelling of 61116111087 in words is "sixty-one billion, one hundred sixteen million, one hundred eleven thousand, eighty-seven".