778260720196 has 24 divisors (see below), whose sum is σ = 1387925098560. Its totient is φ = 381713565792.

The previous prime is 778260720187. The next prime is 778260720199. The reversal of 778260720196 is 691027062877.

It is not an unprimeable number, because it can be changed into a prime (778260720199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734545 + ... + 1447783.

It is an arithmetic number, because the mean of its divisors is an integer number (57830212440).

Almost surely, 2^778260720196 is an apocalyptic number.

It is an amenable number.

778260720196 is a deficient number, since it is larger than the sum of its proper divisors (609664378364).

778260720196 is a wasteful number, since it uses less digits than its factorization.

778260720196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718443 (or 718441 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 778260720196 in words is "seven hundred seventy-eight billion, two hundred sixty million, seven hundred twenty thousand, one hundred ninety-six".