77384343378 has 8 divisors (see below), whose sum is σ = 154768686768. Its totient is φ = 25794781124.

The previous prime is 77384343233. The next prime is 77384343397. The reversal of 77384343378 is 87334348377.

It is a sphenic number, since it is the product of 3 distinct primes.

77384343378 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6448695276 + ... + 6448695287.

It is an arithmetic number, because the mean of its divisors is an integer number (19346085846).

Almost surely, 2^77384343378 is an apocalyptic number.

77384343378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77384343378 is a wasteful number, since it uses less digits than its factorization.

77384343378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12897390568.

The product of its digits is 28449792, while the sum is 57.

The spelling of 77384343378 in words is "seventy-seven billion, three hundred eighty-four million, three hundred forty-three thousand, three hundred seventy-eight".