778608752016426 has 16 divisors (see below), whose sum is σ = 1559733202754400. Its totient is φ = 259116967551888.

The previous prime is 778608752016391. The next prime is 778608752016481. The reversal of 778608752016426 is 624610257806877.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104820776041 + ... + 104820783468.

It is an arithmetic number, because the mean of its divisors is an integer number (97483325172150).

Almost surely, 2^{778608752016426} is an apocalyptic number.

778608752016426 is an abundant number, since it is smaller than the sum of its proper divisors (781124450737974).

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

778608752016426 is a wasteful number, since it uses less digits than its factorization.

778608752016426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209641560133.

The product of its (nonzero) digits is 379330560, while the sum is 69.

The spelling of 778608752016426 in words is "seven hundred seventy-eight trillion, six hundred eight billion, seven hundred fifty-two million, sixteen thousand, four hundred twenty-six".