78816825206 has 32 divisors (see below), whose sum is σ = 136883552832. Its totient is φ = 33338505600.

The previous prime is 78816825181. The next prime is 78816825251. The reversal of 78816825206 is 60252861887.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360320 + ... + 536156.

It is an arithmetic number, because the mean of its divisors is an integer number (4277611026).

Almost surely, 2^78816825206 is an apocalyptic number.

78816825206 is a deficient number, since it is larger than the sum of its proper divisors (58066727626).

78816825206 is a wasteful number, since it uses less digits than its factorization.

78816825206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176264.

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 78816825206 in words is "seventy-eight billion, eight hundred sixteen million, eight hundred twenty-five thousand, two hundred six".