116611616561 has 8 divisors (see below), whose sum is σ = 128472205248. Its totient is φ = 104960950000.

The previous prime is 116611616521. The next prime is 116611616567. The reversal of 116611616561 is 165616116611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 116611616561 - 2⁶ = 116611616497 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 (116611616567) 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 7 ways as a sum of consecutive naturals, for example, 52479365 + ... + 52481586.

It is an arithmetic number, because the mean of its divisors is an integer number (16059025656).

Almost surely, 2^116611616561 is an apocalyptic number.

116611616561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

116611616561 is a deficient number, since it is larger than the sum of its proper divisors (11860588687).

116611616561 is a wasteful number, since it uses less digits than its factorization.

116611616561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104961063.

The product of its digits is 38880, while the sum is 41.

The spelling of 116611616561 in words is "one hundred sixteen billion, six hundred eleven million, six hundred sixteen thousand, five hundred sixty-one".