78812840850 has 48 divisors (see below), whose sum is σ = 196994915328. Its totient is φ = 20851266240.

The previous prime is 78812840831. The next prime is 78812840927. The reversal of 78812840850 is 5804821887.

It is a super-3 number, since 3×78812840850³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 78812840793 and 78812840802.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2049529 + ... + 2087628.

It is an arithmetic number, because the mean of its divisors is an integer number (4104060736).

Almost surely, 2^78812840850 is an apocalyptic number.

78812840850 is an abundant number, since it is smaller than the sum of its proper divisors (118182074478).

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

78812840850 is a wasteful number, since it uses less digits than its factorization.

78812840850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137299 (or 4137294 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 51.

The spelling of 78812840850 in words is "seventy-eight billion, eight hundred twelve million, eight hundred forty thousand, eight hundred fifty".