778818142612456 has 32 divisors (see below), whose sum is σ = 1463442797082240. Its totient is φ = 388566766338048.

The previous prime is 778818142612453. The next prime is 778818142612493. The reversal of 778818142612456 is 654216241818877.

778818142612456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (778818142612453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171281896 + ... + 175770088.

It is an arithmetic number, because the mean of its divisors is an integer number (45732587408820).

Almost surely, 2^{778818142612456} is an apocalyptic number.

It is an amenable number.

778818142612456 is a deficient number, since it is larger than the sum of its proper divisors (684624654469784).

778818142612456 is a wasteful number, since it uses less digits than its factorization.

778818142612456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535113 (or 4535109 counting only the distinct ones).

The product of its digits is 289013760, while the sum is 70.

The spelling of 778818142612456 in words is "seven hundred seventy-eight trillion, eight hundred eighteen billion, one hundred forty-two million, six hundred twelve thousand, four hundred fifty-six".