78713554266 has 12 divisors (see below), whose sum is σ = 170546034282. Its totient is φ = 26237851416.

The previous prime is 78713554261. The next prime is 78713554273. The reversal of 78713554266 is 66245531787.

78713554266 is a `hidden beast` number, since 7 + 8 + 7 + 1 + 35 + 542 + 66 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72184106241 + 6529448025 = 268671^2 + 80805^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (78713554261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2186487601 + ... + 2186487636.

Almost surely, 2^78713554266 is an apocalyptic number.

78713554266 is an abundant number, since it is smaller than the sum of its proper divisors (91832480016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78713554266 is a wasteful number, since it uses less digits than its factorization.

78713554266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372975245 (or 4372975242 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 78713554266 in words is "seventy-eight billion, seven hundred thirteen million, five hundred fifty-four thousand, two hundred sixty-six".