116566011661 has 8 divisors (see below), whose sum is σ = 127972878624. Its totient is φ = 105294137520.

The previous prime is 116566011637. The next prime is 116566011703. The reversal of 116566011661 is 166110665611.

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

It is not a de Polignac number, because 116566011661 - 2⁷ = 116566011533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116566011631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33746395 + ... + 33749848.

It is an arithmetic number, because the mean of its divisors is an integer number (15996609828).

Almost surely, 2^116566011661 is an apocalyptic number.

116566011661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

116566011661 is a deficient number, since it is larger than the sum of its proper divisors (11406866963).

116566011661 is a wasteful number, since it uses less digits than its factorization.

116566011661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67496411.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 116566011661 in words is "one hundred sixteen billion, five hundred sixty-six million, eleven thousand, six hundred sixty-one".