78773205327 has 4 divisors (see below), whose sum is σ = 105030940440. Its totient is φ = 52515470216.

The previous prime is 78773205317. The next prime is 78773205353. The reversal of 78773205327 is 72350237787.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78773205327 - 2⁴ = 78773205311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78773205327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78773205317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13128867552 + ... + 13128867557.

It is an arithmetic number, because the mean of its divisors is an integer number (26257735110).

Almost surely, 2^78773205327 is an apocalyptic number.

78773205327 is a deficient number, since it is larger than the sum of its proper divisors (26257735113).

78773205327 is a wasteful number, since it uses less digits than its factorization.

78773205327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26257735112.

The product of its (nonzero) digits is 3457440, while the sum is 51.

The spelling of 78773205327 in words is "seventy-eight billion, seven hundred seventy-three million, two hundred five thousand, three hundred twenty-seven".