778396619328 has 28 divisors (see below), whose sum is σ = 2059507722480. Its totient is φ = 259465539712.

The previous prime is 778396619317. The next prime is 778396619339. The reversal of 778396619328 is 823916693877.

It is an interprime number because it is at equal distance from previous prime (778396619317) and next prime (778396619339).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027074338 + ... + 2027074721.

Almost surely, 2^778396619328 is an apocalyptic number.

It is an amenable number.

778396619328 is an abundant number, since it is smaller than the sum of its proper divisors (1281111103152).

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

778396619328 is a wasteful number, since it uses less digits than its factorization.

778396619328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054149074 (or 4054149064 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 69.

The spelling of 778396619328 in words is "seven hundred seventy-eight billion, three hundred ninety-six million, six hundred nineteen thousand, three hundred twenty-eight".