8778485774828 has 24 divisors (see below), whose sum is σ = 19153059873024. Its totient is φ = 3420189262800.

The previous prime is 8778485774819. The next prime is 8778485774831. The reversal of 8778485774828 is 8284775848778.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14250788288 + ... + 14250788903.

It is an arithmetic number, because the mean of its divisors is an integer number (798044161376).

Almost surely, 2^{8778485774828} is an apocalyptic number.

It is an amenable number.

8778485774828 is an abundant number, since it is smaller than the sum of its proper divisors (10374574098196).

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

8778485774828 is a wasteful number, since it uses less digits than its factorization.

8778485774828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28501577213 (or 28501577211 counting only the distinct ones).

The product of its digits is 12588154880, while the sum is 83.

The spelling of 8778485774828 in words is "eight trillion, seven hundred seventy-eight billion, four hundred eighty-five million, seven hundred seventy-four thousand, eight hundred twenty-eight".