78961105179 has 80 divisors (see below), whose sum is σ = 135899998080. Its totient is φ = 45185869440.

The previous prime is 78961105159. The next prime is 78961105187. The reversal of 78961105179 is 97150116987.

78961105179 is a `hidden beast` number, since 7 + 8 + 9 + 6 + 110 + 517 + 9 = 666.

It is not a de Polignac number, because 78961105179 - 2⁹ = 78961104667 is a prime.

It is a super-3 number, since 3×78961105179³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (78961105159) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5189607 + ... + 5204799.

It is an arithmetic number, because the mean of its divisors is an integer number (1698749976).

Almost surely, 2^78961105179 is an apocalyptic number.

78961105179 is a deficient number, since it is larger than the sum of its proper divisors (56938892901).

78961105179 is a wasteful number, since it uses less digits than its factorization.

78961105179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15542 (or 15533 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 54.

The spelling of 78961105179 in words is "seventy-eight billion, nine hundred sixty-one million, one hundred five thousand, one hundred seventy-nine".