116530511561 has 24 divisors (see below), whose sum is σ = 125161755264. Its totient is φ = 108459609120.

The previous prime is 116530511527. The next prime is 116530511567. The reversal of 116530511561 is 165115035611.

It is a de Polignac number, because none of the positive numbers 2^k-116530511561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (116530511567) 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 23 ways as a sum of consecutive naturals, for example, 5412560 + ... + 5434046.

It is an arithmetic number, because the mean of its divisors is an integer number (5215073136).

Almost surely, 2^116530511561 is an apocalyptic number.

It is an amenable number.

116530511561 is a deficient number, since it is larger than the sum of its proper divisors (8631243703).

116530511561 is a wasteful number, since it uses less digits than its factorization.

116530511561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21789 (or 21770 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 35.

The spelling of 116530511561 in words is "one hundred sixteen billion, five hundred thirty million, five hundred eleven thousand, five hundred sixty-one".