778875305092 has 12 divisors (see below), whose sum is σ = 1364274300060. Its totient is φ = 389082647936.

The previous prime is 778875305029. The next prime is 778875305209. The reversal of 778875305092 is 290503578877.

778875305092 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 175046844996 + 603828460096 = 418386^2 + 777064^2 .

It is a super-2 number, since 2×778875305092² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 778875305092.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88746217 + ... + 88754992.

It is an arithmetic number, because the mean of its divisors is an integer number (113689525005).

Almost surely, 2^778875305092 is an apocalyptic number.

It is an amenable number.

778875305092 is a deficient number, since it is larger than the sum of its proper divisors (585398994968).

778875305092 is a wasteful number, since it uses less digits than its factorization.

778875305092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177502310 (or 177502308 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 61.

The spelling of 778875305092 in words is "seven hundred seventy-eight billion, eight hundred seventy-five million, three hundred five thousand, ninety-two".