116579786978 has 54 divisors (see below), whose sum is σ = 187914401793. Its totient is φ = 54235509120.

The previous prime is 116579786977. The next prime is 116579787011. The reversal of 116579786978 is 879687975611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 116276226049 + 303560929 = 340993^2 + 17423^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=241433.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116579786977) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 889921973 + ... + 889922103.

Almost surely, 2^116579786978 is an apocalyptic number.

116579786978 is a deficient number, since it is larger than the sum of its proper divisors (71334614815).

116579786978 is an frugal number, since it uses more digits than its factorization.

116579786978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 249 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 74.

The spelling of 116579786978 in words is "one hundred sixteen billion, five hundred seventy-nine million, seven hundred eighty-six thousand, nine hundred seventy-eight".