116781279 has 8 divisors (see below), whose sum is σ = 164867760. Its totient is φ = 73274496.

The previous prime is 116781257. The next prime is 116781299. The reversal of 116781279 is 972187611.

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

It is not a de Polignac number, because 116781279 - 2¹⁶ = 116715743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116781279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116781209) 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 7 ways as a sum of consecutive naturals, for example, 1144864 + ... + 1144965.

It is an arithmetic number, because the mean of its divisors is an integer number (20608470).

Almost surely, 2^116781279 is an apocalyptic number.

116781279 is a deficient number, since it is larger than the sum of its proper divisors (48086481).

116781279 is a wasteful number, since it uses less digits than its factorization.

116781279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289849.

The product of its digits is 42336, while the sum is 42.

The square root of 116781279 is about 10806.5387150558. The cubic root of 116781279 is about 488.7923600188.

The spelling of 116781279 in words is "one hundred sixteen million, seven hundred eighty-one thousand, two hundred seventy-nine".