116509538871 has 24 divisors (see below), whose sum is σ = 185108086800. Its totient is φ = 70611834480.

The previous prime is 116509538869. The next prime is 116509538897. The reversal of 116509538871 is 178835905611.

It is a happy number.

116509538871 is a `hidden beast` number, since 1 + 1 + 6 + 509 + 53 + 8 + 87 + 1 = 666.

It is not a de Polignac number, because 116509538871 - 2¹ = 116509538869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116509538801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4851096 + ... + 4875053.

It is an arithmetic number, because the mean of its divisors is an integer number (7712836950).

Almost surely, 2^116509538871 is an apocalyptic number.

116509538871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

116509538871 is a deficient number, since it is larger than the sum of its proper divisors (68598547929).

116509538871 is an equidigital number, since it uses as much as digits as its factorization.

116509538871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9726188 (or 9726163 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The spelling of 116509538871 in words is "one hundred sixteen billion, five hundred nine million, five hundred thirty-eight thousand, eight hundred seventy-one".