778647523878268 has 192 divisors, whose sum is σ = 1643070965760000. Its totient is φ = 318868227659520.

The previous prime is 778647523878221. The next prime is 778647523878377. The reversal of 778647523878268 is 862878325746877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15137273293 + ... + 15137324731.

It is an arithmetic number, because the mean of its divisors is an integer number (8557661280000).

Almost surely, 2^{778647523878268} is an apocalyptic number.

It is an amenable number.

778647523878268 is an abundant number, since it is smaller than the sum of its proper divisors (864423441881732).

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

778647523878268 is a wasteful number, since it uses less digits than its factorization.

778647523878268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60888 (or 60886 counting only the distinct ones).

The product of its digits is 84970045440, while the sum is 88.

The spelling of 778647523878268 in words is "seven hundred seventy-eight trillion, six hundred forty-seven billion, five hundred twenty-three million, eight hundred seventy-eight thousand, two hundred sixty-eight".