78680844266 has 16 divisors (see below), whose sum is σ = 121474487040. Its totient is φ = 38205676080.

The previous prime is 78680844191. The next prime is 78680844287. The reversal of 78680844266 is 66244808687.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4072166 + ... + 4091441.

It is an arithmetic number, because the mean of its divisors is an integer number (7592155440).

Almost surely, 2^78680844266 is an apocalyptic number.

78680844266 is a deficient number, since it is larger than the sum of its proper divisors (42793642774).

78680844266 is a wasteful number, since it uses less digits than its factorization.

78680844266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8163749.

The product of its (nonzero) digits is 24772608, while the sum is 59.

The spelling of 78680844266 in words is "seventy-eight billion, six hundred eighty million, eight hundred forty-four thousand, two hundred sixty-six".