778860068877 has 12 divisors (see below), whose sum is σ = 1227294654144. Its totient is φ = 472036405320.

The previous prime is 778860068867. The next prime is 778860068929.

778860068877 is a `hidden beast` number, since 7 + 7 + 8 + 8 + 600 + 6 + 8 + 8 + 7 + 7 = 666.

778860068877 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 778860068877 - 2⁶ = 778860068813 is a prime.

It is a super-2 number, since 2×778860068877² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778860068807) 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 11 ways as a sum of consecutive naturals, for example, 3933636613 + ... + 3933636810.

It is an arithmetic number, because the mean of its divisors is an integer number (102274554512).

Almost surely, 2^778860068877 is an apocalyptic number.

It is an amenable number.

778860068877 is a deficient number, since it is larger than the sum of its proper divisors (448434585267).

778860068877 is a wasteful number, since it uses less digits than its factorization.

778860068877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7867273440 (or 7867273437 counting only the distinct ones).

The product of its (nonzero) digits is 354041856, while the sum is 72.

The spelling of 778860068877 in words is "seven hundred seventy-eight billion, eight hundred sixty million, sixty-eight thousand, eight hundred seventy-seven".