828778770500 has 48 divisors (see below), whose sum is σ = 1823870176128.
Its totient is φ = 328980860000.
The previous prime is 828778770461. The next prime is 828778770509. The reversal of 828778770500 is 5077877828.
It is a self number, because there is not a number n which added to its sum of digits gives 828778770500.
It is not an unprimeable number, because it can be changed into a prime (828778770509) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6261056 + ... + 6392055.
It is an arithmetic number, because the mean of its divisors is an integer number (37997295336).
Almost surely, 2828778770500 is an apocalyptic number.
It is an amenable number.
828778770500 is an abundant number, since it is smaller than the sum of its proper divisors (995091405628).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
828778770500 is a wasteful number, since it uses less digits than its factorization.
828778770500 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12653261 (or 12653249 counting only the distinct ones).
The product of its (nonzero) digits is 12293120, while the sum is 59.
The spelling of 828778770500 in words is "eight hundred twenty-eight billion, seven hundred seventy-eight million, seven hundred seventy thousand, five hundred".