8778403468728 has 24 divisors (see below), whose sum is σ = 23774842728000. Its totient is φ = 2926134489552.

The previous prime is 8778403468687. The next prime is 8778403468739. The reversal of 8778403468728 is 8278643048778.

8778403468728 is a `hidden beast` number, since 87 + 7 + 8 + 403 + 46 + 87 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 121922270399 = 8778403468728 / (8 + 7 + 7 + 8 + 4 + 0 + 3 + 4 + 6 + 8 + 7 + 2 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60961135128 + ... + 60961135271.

It is an arithmetic number, because the mean of its divisors is an integer number (990618447000).

Almost surely, 2^{8778403468728} is an apocalyptic number.

It is an amenable number.

8778403468728 is an abundant number, since it is smaller than the sum of its proper divisors (14996439259272).

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

8778403468728 is a wasteful number, since it uses less digits than its factorization.

8778403468728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121922270411 (or 121922270404 counting only the distinct ones).

The product of its (nonzero) digits is 809238528, while the sum is 72.

The spelling of 8778403468728 in words is "eight trillion, seven hundred seventy-eight billion, four hundred three million, four hundred sixty-eight thousand, seven hundred twenty-eight".