78778368322 has 16 divisors (see below), whose sum is σ = 125373435552. Its totient is φ = 36996662080.

The previous prime is 78778368307. The next prime is 78778368323. The reversal of 78778368322 is 22386387787.

It is not an unprimeable number, because it can be changed into a prime (78778368323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2342788 + ... + 2376175.

It is an arithmetic number, because the mean of its divisors is an integer number (7835839722).

Almost surely, 2^78778368322 is an apocalyptic number.

78778368322 is a deficient number, since it is larger than the sum of its proper divisors (46595067230).

78778368322 is a wasteful number, since it uses less digits than its factorization.

78778368322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719473.

The product of its digits is 37933056, while the sum is 61.

The spelling of 78778368322 in words is "seventy-eight billion, seven hundred seventy-eight million, three hundred sixty-eight thousand, three hundred twenty-two".