384778869776 has 20 divisors (see below), whose sum is σ = 852010354752. Its totient is φ = 164905229856.

The previous prime is 384778869773. The next prime is 384778869779. The reversal of 384778869776 is 677968877483.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (384778869773) and next prime (384778869779).

It is a self number, because there is not a number n which added to its sum of digits gives 384778869776.

It is not an unprimeable number, because it can be changed into a prime (384778869773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1717762700 + ... + 1717762923.

Almost surely, 2^384778869776 is an apocalyptic number.

It is an amenable number.

384778869776 is an abundant number, since it is smaller than the sum of its proper divisors (467231484976).

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

384778869776 is a wasteful number, since it uses less digits than its factorization.

384778869776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435525638 (or 3435525632 counting only the distinct ones).

The product of its digits is 4779565056, while the sum is 80.

The spelling of 384778869776 in words is "three hundred eighty-four billion, seven hundred seventy-eight million, eight hundred sixty-nine thousand, seven hundred seventy-six".