116551778218 has 16 divisors (see below), whose sum is σ = 189626568264. Its totient is φ = 53510141440.

The previous prime is 116551778207. The next prime is 116551778219. The reversal of 116551778218 is 812877155611.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 74470589449 + 42081188769 = 272893^2 + 205137^2 .

It is not an unprimeable number, because it can be changed into a prime (116551778219) 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, 41803405 + ... + 41806192.

Almost surely, 2^116551778218 is an apocalyptic number.

116551778218 is a deficient number, since it is larger than the sum of its proper divisors (73074790046).

116551778218 is a wasteful number, since it uses less digits than its factorization.

116551778218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83609657.

The product of its digits is 940800, while the sum is 52.

The spelling of 116551778218 in words is "one hundred sixteen billion, five hundred fifty-one million, seven hundred seventy-eight thousand, two hundred eighteen".