4665778857 has 6 divisors (see below), whose sum is σ = 6739458362. Its totient is φ = 3110519232.

The previous prime is 4665778837. The next prime is 4665778879. The reversal of 4665778857 is 7588775664.

4665778857 is a `hidden beast` number, since 4 + 6 + 6 + 577 + 8 + 8 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4130504361 + 535274496 = 64269^2 + 23136^2 .

It is not a de Polignac number, because 4665778857 - 2¹⁴ = 4665762473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4665778794 and 4665778803.

It is not an unprimeable number, because it can be changed into a prime (4665778807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 259209928 + ... + 259209945.

Almost surely, 2^4665778857 is an apocalyptic number.

It is an amenable number.

4665778857 is a deficient number, since it is larger than the sum of its proper divisors (2073679505).

4665778857 is a wasteful number, since it uses less digits than its factorization.

4665778857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518419879 (or 518419876 counting only the distinct ones).

The product of its digits is 79027200, while the sum is 63.

The square root of 4665778857 is about 68306.5066959217. The cubic root of 4665778857 is about 1670.9933322108.

The spelling of 4665778857 in words is "four billion, six hundred sixty-five million, seven hundred seventy-eight thousand, eight hundred fifty-seven".