116781081 has 8 divisors (see below), whose sum is σ = 155785344. Its totient is φ = 77815440.

The previous prime is 116781059. The next prime is 116781089. The reversal of 116781081 is 180187611.

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

It is not a de Polignac number, because 116781081 - 2⁷ = 116780953 is a prime.

It is a super-2 number, since 2×116781081² = 27275641759057122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (116781089) 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, 1650 + ... + 15371.

It is an arithmetic number, because the mean of its divisors is an integer number (19473168).

Almost surely, 2^116781081 is an apocalyptic number.

It is an amenable number.

116781081 is a deficient number, since it is larger than the sum of its proper divisors (39004263).

116781081 is a wasteful number, since it uses less digits than its factorization.

116781081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19311.

The product of its (nonzero) digits is 2688, while the sum is 33.

The square root of 116781081 is about 10806.5295539317. The cubic root of 116781081 is about 488.7920837732.

The spelling of 116781081 in words is "one hundred sixteen million, seven hundred eighty-one thousand, eighty-one".